Hydraulic Dump

Vintage Mighty Tonka Hydraulic Dump Truck Diecast Orange
Vintage Mighty Tonka Hydraulic Dump Truck Diecast Orange $19.99 (1 Bid)
Time Remaining: 5h 58m

ERTL INTERNATIONAL TRANSTAR Hydraulic Automatic Dump Truck NIB Pressed Steel
ERTL INTERNATIONAL TRANSTAR Hydraulic Automatic Dump Truck NIB Pressed Steel $50.00
Time Remaining: 5d 19h 38m
Buy It Now for only: $50.00

Tonka Hydraulic Dump Truck 65 69 Decal Set TK 027
Tonka Hydraulic Dump Truck 65 69 Decal Set  TK 027 $4.50
Time Remaining: 12d 21h 53m
Buy It Now for only: $4.50

1950s Nylint 4600 Hydraulic Dumper 22 Dump Truck Construction
1950s Nylint 4600 Hydraulic Dumper 22 Dump Truck Construction $17.49 (4 Bids)
Time Remaining: 1d 8h 52m

Structo 1960s Hydraulic Dump Truck Stickers ST 027
Structo 1960s Hydraulic Dump Truck Stickers  ST 027 $4.50
Time Remaining: 26d 21h 39m
Buy It Now for only: $4.50

VINTAGE 1940 50S BUDDY L HYDRAULIC DELUXE DUMP TRUCK
VINTAGE 1940 50S BUDDY L HYDRAULIC DELUXE DUMP TRUCK $79.99
Time Remaining: 29d 13h 43m
Buy It Now for only: $79.99

VINTAGE BUDDY L HYDRAULIC DUMP TRUCK
VINTAGE BUDDY L HYDRAULIC DUMP TRUCK $21.50 (3 Bids)
Time Remaining: 1d 21h 12m

Structo Hydraulic Dump Truck Stickers ST 087
Structo Hydraulic Dump Truck Stickers   ST 087 $5.50
Time Remaining: 28d 19h 21m
Buy It Now for only: $5.50

VIntage Tonka Hydraulic Dump Truck
VIntage Tonka Hydraulic Dump Truck $89.95
Time Remaining: 27d 6h 11m
Buy It Now for only: $89.95

1926 Buddy L Hydraulic dump truck NO RESERVE
1926 Buddy L Hydraulic dump truck NO RESERVE $142.50 (8 Bids)
Time Remaining: 2d 5h 53m

This is a Smith Miller White Blue Diamond Hydraulic Dump Truck
This is a Smith Miller White Blue Diamond Hydraulic Dump Truck $325.00
Time Remaining: 8d 5h 1m
Buy It Now for only: $325.00

VIntage 1950s Buddy L Highway Maintenance Hydraulic Dump Truck
VIntage 1950s Buddy L Highway Maintenance Hydraulic Dump Truck $69.95
Time Remaining: 15d 57m
Buy It Now for only: $69.95

vintage tonka hydraulic dump truck no 520 Very nice SOLID pressed blue in color
vintage tonka hydraulic dump truck no 520 Very nice SOLID pressed blue in color $50.00
Time Remaining: 2d 5h 54m

VINTAGE NYLINT URANIUM HYDRAULIC DUMP HAULER
VINTAGE NYLINT URANIUM HYDRAULIC DUMP HAULER $80.00
Time Remaining: 13d 17h 20m
Buy It Now for only: $80.00

1950s BUDDY L Pressed Steel HYDRAULIC Toy DUMP TRUCK For Restoration
1950s BUDDY L Pressed Steel HYDRAULIC Toy DUMP TRUCK For Restoration $19.50 (10 Bids)
Time Remaining: 2d 7h 18m

Vintage 1957 Tonka HYDRAULIC DUMP Truck No 20 ORIGINAL CONDITION
Vintage 1957 Tonka HYDRAULIC DUMP Truck No 20 ORIGINAL CONDITION $79.99
Time Remaining: 19d 6h 13m
Buy It Now for only: $79.99

Smith Miller Blue Diamond Hydraulic Dump Truck
Smith Miller Blue Diamond Hydraulic Dump Truck $479.99
Time Remaining: 22d 16h 58m
Buy It Now for only: $479.99

Vintage Hydraulic Metal Toy Dump Truck 3 Axle Dump Truck
Vintage Hydraulic Metal Toy Dump Truck 3 Axle Dump Truck $9.99
Time Remaining: 2d 11h 7m

TONKA HYDRAULIC DUMP TRUCK DECAL SET
TONKA HYDRAULIC DUMP TRUCK DECAL SET $5.00
Time Remaining: 5d 23h 57m
Buy It Now for only: $5.00

Tonka Hydraulic Dump Truck Sticker Set TK 139
Tonka Hydraulic Dump Truck Sticker Set   TK 139 $4.50
Time Remaining: 28d 19h 25m
Buy It Now for only: $4.50

Vintage Structo 401 Hydraulic Pressed Steel Dump Dumper Toy Truck
Vintage Structo 401 Hydraulic Pressed Steel Dump Dumper Toy Truck $10.49 (2 Bids)
Time Remaining: 3d 2h 20m

Tonka Turbine Hydraulic Dump Truck Sticker Set TK 196
Tonka Turbine Hydraulic Dump Truck Sticker Set TK 196 $4.50
Time Remaining: 13d 19h 16m
Buy It Now for only: $4.50

Structo 1950s Hydraulic Dump Truck Stickers ST 034
Structo 1950s Hydraulic Dump Truck Stickers  ST 034 $6.50
Time Remaining: 24d 23h 43m
Buy It Now for only: $6.50

Vintage Tonka State Hi Way 975 Hydraulic Dump Truck Side Dump Toy Truck
Vintage Tonka State Hi Way 975 Hydraulic Dump Truck Side Dump Toy Truck $51.00 (3 Bids)
Time Remaining: 3d 5h 34m

Smith Miller B Mack Hydraulic Dump Truck AWESOME
Smith Miller B Mack Hydraulic Dump Truck AWESOME $850.00
Time Remaining: 5d 5h 58m
Buy It Now for only: $850.00

Tonka Bronze Hydraulic Dump Truck Sticker Set TK 042
Tonka Bronze Hydraulic Dump Truck Sticker Set TK 042 $5.50
Time Remaining: 1h 29m
Buy It Now for only: $5.50

VINTAGE ERTL INTERNATIONAL LOADSTAR DUMP TRUCK DUAL REAR WHEELS HYDRAULIC TOY
VINTAGE ERTL INTERNATIONAL LOADSTAR DUMP TRUCK DUAL REAR WHEELS HYDRAULIC TOY $42.33 (2 Bids)
Time Remaining: 4d 3h 58m

Buddy L Deluxe Hydraulic Dump Truck Stickers BL 168
Buddy L Deluxe Hydraulic Dump Truck Stickers BL 168 $6.50
Time Remaining: 27d 21h 39m
Buy It Now for only: $6.50

VINTAGE 1950s TONKA HYDRAULIC METAL DIE CAST DUMP TRUCK
VINTAGE 1950s TONKA HYDRAULIC METAL DIE CAST DUMP TRUCK $33.45
Time Remaining: 4d 4h 17m

STRUCTO HYDRAULIC DUMP NO 500 WITH BOX
STRUCTO HYDRAULIC DUMP NO 500 WITH BOX $59.00
Time Remaining: 1d 10h 31m
Buy It Now for only: $59.00

NEW HYDRAULIC CYLINDER FOR TONKA 54 60 DUMP TRUCK
NEW HYDRAULIC CYLINDER FOR TONKA 54 60 DUMP TRUCK $24.99
Time Remaining: 7d 20h 56m
Buy It Now for only: $24.99

Original Hydraulic Buddy L Dumper dump Truck pressed steel FREE SHIPPING
Original Hydraulic Buddy L Dumper dump Truck pressed steel FREE SHIPPING $129.00
Time Remaining: 4d 8h 43m
Buy It Now for only: $195.00

MIGHTY TONKA HYDRAULIC DUMP DECAL SET
MIGHTY TONKA HYDRAULIC DUMP DECAL SET $5.00
Time Remaining: 3d 19h 59m
Buy It Now for only: $5.00

STRUCTO 1950S ORANGE HYDRAULIC DUMP TRUCK DUMP BED
STRUCTO 1950S ORANGE HYDRAULIC DUMP TRUCK DUMP BED $29.99
Time Remaining: 13d 6h 34m
Buy It Now for only: $29.99

Tonka Toys Hydraulic Dump Truck
Tonka Toys Hydraulic Dump Truck $29.99
Time Remaining: 4d 16h 59m
Buy It Now for only: $45.00

VINTAGE 1970s MIGHTY TONKA HYDRAULIC DUMP TRUCK CAB EXCELLENT 3902
VINTAGE 1970s MIGHTY TONKA HYDRAULIC DUMP TRUCK CAB EXCELLENT 3902 $159.99
Time Remaining: 4d 7h 25m
Buy It Now for only: $159.99

Nylint 6100 Hydraulic Dump Truck Sticker Set NY 095
Nylint 6100 Hydraulic Dump Truck Sticker Set NY 095 $4.50
Time Remaining: 25d 19h 4m
Buy It Now for only: $4.50

Tonka Bronze Hydraulic Dump Truck
Tonka Bronze Hydraulic Dump Truck $32.00 (1 Bid)
Time Remaining: 4d 20h 52m

STRUCTO 1950S GREEN HYDRAULIC DUMP TRUCK DUMP BED
STRUCTO 1950S GREEN HYDRAULIC DUMP TRUCK DUMP BED $29.99
Time Remaining: 13d 6h 36m
Buy It Now for only: $29.99

TONKA PRESSED STEEL HYDRAULIC DUMP TRUCK RED YELLOW
TONKA PRESSED STEEL HYDRAULIC DUMP TRUCK RED  YELLOW $29.99
Time Remaining: 9d 5h 52m
Buy It Now for only: $29.99

Vintage Structo Pressed Steel Toy Sanitation Dept Hydraulic Dump Truck NR
Vintage Structo Pressed Steel Toy Sanitation Dept Hydraulic Dump Truck NR $19.99
Time Remaining: 5d 3h 8m

Structo Hydraulic Dumper Dump Truck Stickers ST 038
Structo Hydraulic Dumper Dump Truck Stickers  ST 038 $3.50
Time Remaining: 1d 6h 24m
Buy It Now for only: $3.50

Vtg BUDDY L HUSKY CLASSIC HYDRAULIC DUMP TRUCK 1960s COLLECTIBLE
Vtg BUDDY L HUSKY CLASSIC HYDRAULIC DUMP TRUCK 1960s COLLECTIBLE $9.99 (1 Bid)
Time Remaining: 5d 5h 28m

Structo Hydraulic Dump Truck Decals ST 072
Structo Hydraulic Dump Truck Decals    ST 072 $4.50
Time Remaining: 28d 19h 22m
Buy It Now for only: $4.50

TONKA PRESSED STEEL HYDRAULIC DUMP TRUCK RED YELLOW
TONKA PRESSED STEEL HYDRAULIC DUMP TRUCK RED  YELLOW $15.00
Time Remaining: 6d 17h 3m
Buy It Now for only: $15.00

VINTAGE BUDDY L PRESSED STEEL HYDRAULIC DUMP TRUCK
VINTAGE BUDDY L PRESSED STEEL HYDRAULIC DUMP TRUCK $29.99
Time Remaining: 5d 6h 58m

Nylint Hydraulic Dump Construction Toy Stickers NY 067
Nylint Hydraulic Dump Construction Toy Stickers NY 067 $8.50
Time Remaining: 27d 21h 48m
Buy It Now for only: $8.50

Buddy L Dual Action Hydraulic Dump Sticker Set BL 078
Buddy L Dual Action Hydraulic Dump Sticker Set BL 078 $8.50
Time Remaining: 26d 21h 24m
Buy It Now for only: $8.50

Vintage Tonka Pressed Steel Red Hydraulic Dump Truck 1962 No 520 Circle Decals
Vintage Tonka Pressed Steel Red Hydraulic Dump Truck 1962 No 520 Circle Decals $4.99 (1 Bid)
Time Remaining: 5d 7h

Structo Hydraulic Dump N Load Truck Sticker ST 063
Structo Hydraulic Dump N Load Truck Sticker  ST 063 $5.50
Time Remaining: 1h 24m
Buy It Now for only: $5.50

Marx Hydraulic Dump Truck Replacement Stickers MX 028
Marx Hydraulic Dump Truck Replacement Stickers MX 028 $7.50
Time Remaining: 1h 16m
Buy It Now for only: $7.50

Vintage Hydraulic TONKA DUMP TRUCK Red Yellow 13190
Vintage Hydraulic TONKA DUMP TRUCK Red Yellow 13190 $9.99
Time Remaining: 5d 22h 55m

Marx Hydraulic Dump Truck Style Stickers MX 026
Marx Hydraulic Dump Truck Style Stickers   MX 026 $7.50
Time Remaining: 27d 21h 44m
Buy It Now for only: $7.50

Vintage 1950s Red Buddy L Deluxe Pressed Steel Hydraulic Dump Truck
Vintage 1950s Red Buddy L Deluxe Pressed Steel Hydraulic Dump Truck $75.00
Time Remaining: 6d 20h 13m
Buy It Now for only: $100.00

VINTAGE TONKA HYDRAULIC DUMP TRUCK
VINTAGE TONKA HYDRAULIC DUMP TRUCK $26.99
Time Remaining: 8d 22h 33m
Buy It Now for only: $26.99

Vintage Marx Hydraulic Dump Utility Truck VGC
Vintage Marx Hydraulic Dump Utility Truck VGC $50.00
Time Remaining: 17d 1h 2m
Buy It Now for only: $50.00

Vintage Structo Hydraulic Dump Truck
Vintage Structo Hydraulic Dump Truck $25.95
Time Remaining: 6d 20h 42m

Ertl Hydraulic Automatic Dump Truck in original box PrSteel1
Ertl Hydraulic Automatic Dump Truck in original box PrSteel1 $90.00
Time Remaining: 22d 6h 19m
Buy It Now for only: $90.00

Tonka Hydraulic Dump Near Mint in Box 2520
Tonka Hydraulic Dump Near Mint in Box 2520 $200.00
Time Remaining: 6d 23h 24m
Buy It Now for only: $200.00

Tonka Hydraulic Dump Truck No 520 1960s antique truck very good condition
Tonka Hydraulic Dump Truck No 520 1960s antique truck very good condition $75.00
Time Remaining: 2h 9m

STRUCTO 1950S DUMP TRUCK DUMP BED HYDRAULIC CYLINDER
STRUCTO 1950S DUMP TRUCK DUMP BED HYDRAULIC CYLINDER $34.99
Time Remaining: 13d 6h 21m
Buy It Now for only: $34.99

TONKA BRAND NEW RETURN SPRING FOR HYDRAULIC DUMP LEVER
TONKA BRAND NEW RETURN SPRING FOR HYDRAULIC DUMP LEVER $4.75
Time Remaining: 2d 2h 57m
Buy It Now for only: $4.75

Smith Miller Mack Hydraulic Dump Truck Pressed Steel All Original NO RESERVE
Smith Miller Mack Hydraulic Dump Truck Pressed Steel All Original NO RESERVE $378.86 (8 Bids)
Time Remaining: 6h 3m

TONKA TRUCK HYDRAULIC BRONZE DUMP TRUCK 57 61
TONKA TRUCK HYDRAULIC BRONZE DUMP TRUCK 57 61 $5.00
Time Remaining: 15d 6h 36m
Buy It Now for only: $5.00

Buddy L 201A Hydraulic Dump Very Good Original
Buddy L 201A Hydraulic Dump Very Good Original $725.00
Time Remaining: 16d 48m
Buy It Now for only: $725.00

Buddy L Antique Hydraulic Dump Truck Patent Applied For imprint
Buddy L Antique Hydraulic Dump Truck Patent Applied For imprint $1,000.00
Time Remaining: 19h 7m

Vintage 1960s TONKA dump truck hydraulic piston MSSNG rear wheels otherwise nicE
Vintage 1960s TONKA dump truck hydraulic piston MSSNG rear wheels otherwise nicE $75.52
Time Remaining: 24d 1h 49m
Buy It Now for only: $75.52

Vintage Nylint Dump Truck with Hydraulics and RUST
Vintage Nylint Dump Truck with Hydraulics and RUST $18.99
Time Remaining: 1d 23h 33m

NYLINT DUMP TRUCK ORANGE CASE INTERNATIONAL HARVESTER HYDRAULIC DUMP 13X7X5
NYLINT DUMP TRUCK ORANGE CASE INTERNATIONAL HARVESTER HYDRAULIC DUMP 13X7X5 $27.99
Time Remaining: 3d 23h 14m
Buy It Now for only: $27.99

Vintage1950s Tonka metal diecast hydraulic dump truck round fender truck
Vintage1950s Tonka metal diecast hydraulic dump truck round fender truck $150.00
Time Remaining: 7d 7h 32m
Buy It Now for only: $150.00

Vintage Tonka Hydraulic Dump Truck
Vintage Tonka Hydraulic Dump Truck $24.99
Time Remaining: 3d 8h

BUDDY L 1957 59 DOUBLE HYDRAULIC DUMP TRUCK and TRAILER
BUDDY L 1957 59 DOUBLE HYDRAULIC DUMP TRUCK and TRAILER $325.00
Time Remaining: 22h 32m
Buy It Now for only: $325.00

Vintage Structo Hom Pak Dump Truck Hydraulic Bed 1960s
Vintage Structo Hom Pak Dump Truck Hydraulic Bed 1960s $29.99
Time Remaining: 6d 6h 43m
Buy It Now for only: $29.99

Buddy L Dump Truck Hydraulic Red Plastic and Tin BUDDY L
Buddy L Dump Truck Hydraulic Red Plastic and Tin BUDDY L $14.99
Time Remaining: 4d 8h 49m

Structo Grading Service Dump Truck Hydraulic Dump Ford Cabover Commercial GREAT
Structo Grading Service Dump Truck Hydraulic Dump Ford Cabover Commercial GREAT $49.95
Time Remaining: 13d 7h 10m
Buy It Now for only: $49.95

TONKA Pressed Steel 1957 STATE HI WAY DEPT HYDRAULIC SIDE DUMP TRUCK 13 inch
TONKA Pressed Steel 1957 STATE HI WAY DEPT HYDRAULIC SIDE DUMP TRUCK 13 inch $295.00
Time Remaining: 16d 8m
Buy It Now for only: $295.00

Tonka Hydraulic Mighty Dump Truck
Tonka Hydraulic Mighty Dump Truck $9.99
Time Remaining: 4d 22h 35m

Vintage Structo hydraulic dump truck 1950s original condition
Vintage Structo hydraulic dump truck 1950s original condition $90.25
Time Remaining: 29d 22h 58m
Buy It Now for only: $90.25

RARE 1960s Tonka Hydraulic Dump Truck WORKS
RARE 1960s Tonka Hydraulic Dump Truck WORKS $100.00
Time Remaining: 12d 3h 14m
Buy It Now for only: $100.00

50S TIN LITHO FRICTION POWER HYDRAULIC DUMP TRUCK VEHICLE NICE
50S TIN LITHO FRICTION POWER HYDRAULIC DUMP TRUCK VEHICLE NICE $7.99 (1 Bid)
Time Remaining: 5d 2h 8m

Buddy L Toy Hydraulic Dump Truck Struco Hubley Marx Works nice
Buddy L Toy Hydraulic Dump Truck Struco Hubley Marx Works nice $29.99
Time Remaining: 4d 22h 17m
Buy It Now for only: $29.99

Vintage 1970s Ertl Automatic Transtar Hydraulic Dump Truck Excellent Cond
Vintage 1970s Ertl Automatic Transtar Hydraulic Dump Truck Excellent Cond $19.99
Time Remaining: 5d 9h 24m

Super Clean Tonka Hydraulic Dump
Super Clean Tonka Hydraulic Dump $200.00
Time Remaining: 18h 52m
Buy It Now for only: $200.00

TONKA LAND ROVER HYDRAULIC DUMP TRUCK DECAL THE BEST
TONKA LAND ROVER HYDRAULIC DUMP TRUCK DECAL THE BEST $4.50
Time Remaining: 25d 23h 56m
Buy It Now for only: $4.50

1950s Buddy L Hydraulic Highway Maintenance Dump Truck RESTORED
1950s Buddy L Hydraulic Highway Maintenance Dump Truck RESTORED $0.99 (1 Bid)
Time Remaining: 6d 2h 10m

TONKA BIG MIKE HYDRAULIC DUMP TRUCK DECAL THE BEST
TONKA BIG MIKE HYDRAULIC DUMP TRUCK DECAL  THE BEST $5.50
Time Remaining: 25d 23h 56m
Buy It Now for only: $5.50

1960s Ertl 12inch International Harvester Hydraulic Dump Truck Dual Rubber Tires
1960s Ertl 12inch International Harvester Hydraulic Dump Truck Dual Rubber Tires $89.99
Time Remaining: 8d 23h 51m
Buy It Now for only: $89.99

Vintage Ertl International Transtar Dump Truck Automatic Hydraulic Dump
Vintage Ertl International Transtar Dump Truck Automatic Hydraulic Dump $9.99
Time Remaining: 7d 7h 58m

Vtg STRUCTO Hydraulic Dump Truck 20 Hydraulically Operated Original Paint NICE
Vtg STRUCTO Hydraulic Dump Truck 20 Hydraulically Operated Original Paint NICE $69.99
Time Remaining: 2d 17h 9m
Buy It Now for only: $69.99

EARLY BUDDY L HYDRAULIC DUMPER DUMP TRUCK ATTIC FIND
EARLY BUDDY L HYDRAULIC DUMPER DUMP TRUCK ATTIC FIND $155.00
Time Remaining: 18d 17h 45m
Buy It Now for only: $155.00

1960s Vintage Red Yellow Tonka Dump Truck Great Condition Pickup Hydraulic
1960s Vintage Red Yellow Tonka Dump Truck Great Condition Pickup Hydraulic $40.00
Time Remaining: 5d 20h 47m

1960s Tonka Hydraulic Dump Truck
1960s Tonka Hydraulic Dump Truck $120.00
Time Remaining: 19d 1h 42m
Buy It Now for only: $120.00

Hydraulic Dump

Realize Superior Protection Performance and Cost Savings with Synthetic Hydraulic Oils

Hydraulic systems are everywhere, with common examples including the following:

• Garbage trucks

• Mobile cranes

• Snow plows

• Forklifts

• Dump trucks

• Excavators

• Front-end loaders

• Mobile shears

• Backhoes

• Mobile well-drilling and core-sampling equipment

• Skidders

• Piling rigs

• Street sweepers

• Mobile hydraulic power units

• Bucket trucks

• Tow trucks

• Feller bunchers

• Scissor lifts

Hydraulic Systems

Hydraulic systems can look complex and intimidating, but most are relatively straightforward, consisting of a sump, a pump, hoses, valves and either pistons or hydraulic motors.

Sump – The hydraulic system's sump responsible for holding the oil, providing time for the transferring of heat, and a place for contaminants, including water, to settle.

Pump – The hydraulic system's pump produces the fluid flow that creates pressure. In most cases, it is the most expensive part in the system. Hydraulic oils are subjected to pump tests to prove their ability to protect pumps under normal operating conditions. Hydraulic systems can have many different types of pumps, but the three most common are gear, vane and piston pumps. Gear pumps are often found on lower-pressure systems and are relatively simple and reliable. As positive displacement pumps, they pump a fixed amount of fluid for every revolution. Although variations exist, a good example is an automotive oil pump. Vane pumps are common on mobile equipment and can be variable or constant displacement. Piston pumps can be found on higher-pressure applications and are more complex and sensitive to contamination than vane or piston pumps.

Hoses – Hoses carry hydraulic pressure and flow to various components, and are perhaps the weakest link in any hydraulic system. Maintenance is often ignored until a problem develops. Hoses fail due to heat, cold, repeated flexing, physical damage and exposure to the elements.

Valves – Valves control the route of the hydraulic flow within the system, sending flow and pressure to components in order to operate them. Pulling a lever back may route fluid to one side of the hydraulic system, causing it to extend a piston, while pushing it forward may cause it to retract. Varnish presents a major problem with valves, causing them to stick or not allowing them to seal properly.

Pistons/Hydraulic Motors – Pistons and hydraulic motors convert the hydraulic flow and pressure into work. Pistons provide linear motion, allowing bulldozer blades to lift and backhoe buckets to tip, while motors convert hydraulic flow and pressure into rotational force, allowing drills to operate. Common issues associated with pistons and hydraulic motors are internal or external leakage. External leakage results in loss of fluid and possible contamination issues, while internal leakage results in lost efficiency. For example, a bottle jack with its valve only partially closed requires furious pumping to lift an object off the ground and won't be able to keep it there.

Hydraulic Oil

Zinc containing hydraulic oil is a commonly used hydraulic fluid, while other applications call for zinc free hydraulic oil, motor oil or transmission fluid. Hydrostatic hydraulic oil is required when the fluid must also operate the hydrostatic transmission, biodegradable hydraulic oil is often required in environmentally sensitive areas and some applications require fire resistant hydraulic oils. Each type of hydraulic oil has unique characteristics, and it's important to understand what's required for specific applications. The equipment's operator's manual will usually recommend viscosities for the ambient temperatures the machine is operated in or could even recommend a specific oil brand. This information can be used to determine the appropriate AMSOIL synthetic hydraulic oil. When in doubt, contact AMSOIL Technical Services at 715-399-TECH (8324).

Hydraulic Oil Problems

Heat and contamination present serious challenges for hydraulic oils. If the system becomes too hot, the oil's viscosity can thin to the point where the pump is damaged or seals are destroyed. Because conventional hydraulic oil is often less expensive than synthetic hydraulic oil, it is important to understand the benefits and cost savings Amsoil synthetic hydraulic oils provide.

Heat Reduction – The synthetic construction of Amsoil synthetic hydraulic oils can reduce heat in hydraulic systems, leading to better viscosity retention, less varnish build-up and oxidation, reduction in component wear (including hoses); longer seal life and better overall system performance.

Cold-Weather Performance – Amsoil synthetic hydraulic oils have much better cold-temperature characteristics than many petroleum oils. This can be seen by comparing the viscosity index, Brookfield viscosity and pour point numbers of a conventional oil to the corresponding viscosity Amsoil synthetic hydraulic oil. Because mobile equipment generally sits out in the elements while on a job site, conventional hydraulic oils can thicken in the cold and lead to damage such as excessive pump wear due to cavitation, blown hoses, broken shafts or extended warm-up times that waste fuel. Use of the proper Amsoil synthetic hydraulic oil viscosity helps reduce or eliminate many of these issues.

All-Season Functionality – To eliminate some of the problems associated with temperature changes, many mobile equipment owners switch viscosities with the seasons. They may run an ISO VG 22 viscosity oil in the winter and switch to an ISO VG 32 or 46 oil in the summer. Amsoil synthetic hydraulic oils are high-viscosity-index formulations that can eliminate the need for seasonal changes. It's very possible to run an ISO 32 or ISO 46 successfully year round in all but the most extreme cold conditions.

Hose Life Preservation – Because many equipment operators consider blown hoses, leaky seals and loss of hydraulic fluid an unavoidable problem, they may not initially be interested in investing in more expensive hydraulic fluid they believe will just end up on the ground. If hoses mainly get snagged, chafed or damaged externally, they will continue to lose hoses until they physically remedy the situation. However, if the hoses and seals are blowing in cold weather or because of deterioration, AMSOIL synthetic hydraulic oils can help. Cold and heat wreak havoc on hoses and seals. Cold, thick fluid can cause pressure spikes and extremely hot fluid breaks down hoses and seals over time. The superior cooling and flow properties of AMSOIL synthetic hydraulic oils help preserve hose integrity.

AMSOIL Synthetic Anti-Wear Hydraulic Oils

Amsoil Synthetic Anti-Wear Hydraulic Oils effectively inhibit oxidation to help prevent acid formation and viscosity increase, resist carbon and varnish deposits and inhibit rust and foam (providing smooth hydraulic operation). They contain a very effective zinc based anti wear/antioxidant additive which controls wear in high-speed, high pressure vane and gear pumps while meeting the lubrication requirements of axial piston pumps with bronze-on-steel metallurgy.

• Extended oil drain intervals

• Anti-wear protection

• Recommended for gear, vane and piston pumps

• Contain rust, oxidation and foam inhibitors

• Designed for a wide temperature range

• Hydrolytically stable and readily separate from water

AMSOIL Biodegradable Hydraulic Oil

Amsoil Biodegradable Hydraulic Oil (BHO) is a premium performance hydraulic oil that exhibits high biodegradability and low aquatic toxicity, along with superior oxidative stability, excellent low-temperature performance and outstanding results in laboratory and extended duration pump testing. It contains antioxidants that prolong oil life and foam inhibitors that help promote problem-free operation.

About the Author

Use Less Oil is a provider of premium synthetic oils and lubricants for all types of gas and diesel vehicles large and small. Whether the vehicle travels on land or water, on paved roads or make its own roads, mows your lawn or your fields they have the "greenest" oil products in the world. For the best motor oil available, for the greatest engine oil there is contact Use Less Oil at http://UseLessOilUSA.com or check out our information packed blog at http://UseLessOil.info.

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