Bobcat Hydraulic

Will putting regular motor oil into a hydraulic reservior to raise the oil level up to normal hurt anything ?

We have a bobcat skid steer loader on the farm that was built in the mid 70's. Works pretty good for its age and we don't push it hard but it has it's share of leaks mostly at the seals. We were told by a mechanic that works on them that if you didn't have any hydraulic oil on hand you could put W30 motor oil in the reservior to bring it back up to proper level. Thats been a couple of years ago and now motor oil of any viscosity is being put into it. Will this damage any of the system; seals ,pump,valves etc.? The whole system will take about 13 gals. and I'm concerned that when I change the filter and top off with oil its just going to be a waste of oil and filter unless the whole system is flushed out.

Yup. The mechanic just wanted extra work. You will be back with a broken hydraulic system pump. You do that in emergency situations. It is not meant to stay in there. The whole system has to be flushed out and cleaned. that means parts taken apart and washed clean of oil. Brake fluid(hydraulic fluid is not oil). Oil will harden seals and neoprene causing them to leak even more. Also oil is corrosive to flexible hoses and they will crack. Oil will also burn.

Bobcat Secondary Hydraulic Filter T180 T190 skid steer loader 6686926 IL
Bobcat Secondary Hydraulic Filter T180 T190 skid steer loader 6686926 IL
$40.00
Time Remaining: 5h 7m
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Bobcat Hydraulic Filter T110 T140 T180 T190 T200 skid steer loader 6661248 IL
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$40.00
Time Remaining: 5h 7m
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Bobcat Hydraulic Filter S100 S130 S150 S160 S175 S185 S205 skid steer 6661248 IL
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Bobcat 721 Skid Steer Loader Tilt Hydraulic Cylinder Seal Kit 6504960
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Bobcat 620 Skid Steer Loader Tilt Hydraulic Cylinder Seal Kit 6504960
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Time Remaining: 17h 41m
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Tilt Hydraulic Cylinder Seal Kit Bobcat 500E or 600E Loader 6504960
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Tilt Hydraulic Cylinder Seal Kit Bobcat 500 Loader 6504960
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$13.99
Time Remaining: 17h 50m
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Lift Hydraulic Cylinder Seal Kit Bobcat 440 or 443 Loader 6504960
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Lift Hydraulic Cylinder Seal Kit Bobcat Farm Boy Loader 6504960
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Tilt Hydraulic Cylinder Seal Kit Bobcat 444 Loader 6504960
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Lift or Tilt Hydraulic Cylinder Kit Bobcat 310 313 or 371 Loader 6504960
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Bobcat 730 740 800 Rear Stabilizer Hydraulic Cylinder Seal Kit 6504960
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Bobcat 630 640 Rear Stabilizer Hydraulic Cylinder Seal Kit 6504960
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6804609 Bobcat Skid Steer Loader Lift Hydraulic Cylinder Seal Kit 873 Rod
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Bobcat Flat face Quick Coupler Hydraulic 751 753 763 773 863 873 883 963 Skid
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USED BOBCAT 753 SKID STEER LOADER UNI LOADER HYDRAULIC DRIVE PUMP
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Bobcat 730 Series Hydraulic Drive Motor Stump Grinder SG60 Attachment
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Bobcat 630 Series Hydraulic Drive Motor Stump Grinder SG60 Attachment
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Bobcat Hydraulic Oil Vent Cap 751 753 763 773 843 853 863 864 873 883 Skid Steer
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Time Remaining: 3d 2h 51m
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Bobcat Hydraulic Oil Vent Cap S220 S250 S300 S330 A220 A300 Skid Steer Loader
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Bobcat Hydraulic Oil Vent Cap T200 T250 T300 T320 Skid Steer Loader
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Bobcat 873 Hydraulic Control Valve C Series Skid Steer 863
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Time Remaining: 3d 4h 49m
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BOBCAT 863G USED HYDRAULIC PUMP COMPLETE 6656074 6672588 GOOD CONDITION SALE
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BOBCAT 231 HYDRAULIC EXCAVATOR SERVICE REPAIR MANUAL sn 11000 below
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Genuine Bobcat Hydraulic Control Valve 7010128
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OEM Bobcat 773 Final Drive Hydraulic Motor Skid Steer 2 Available
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$395.00
Time Remaining: 3d 23h 54m
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New BOBCAT Hydraulic Rod and Piston Assembly Service A 7239365 7 239 365
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Time Remaining: 4d 54m
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HYDRAULIC QUICK RELEASE FLAT FACE COUPLING EXCAVATOR BOBCAT HAMMER AUGER FULLKIT
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HYDRAULIC QUICK RELEASE FLAT FACE COUPLING EXCAVATOR BOBCAT HAMMER AUGER PAIR
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Time Remaining: 4d 7h 48m
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BOBCAT COMPONENT REPAIR PUMP HYDRAULIC MOTO SERVICE MANUAL MELROE INGERSOLL RAND
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2 Clark Bobcat Hydraulic Cylinder Seal Kit Part  6509122
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Bobcat High Flow Hydraulic Filter S220 S250 S300 S330 A300 skid steer 6668819 IL
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$49.95
Time Remaining: 5d 3h 56m
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Bobcat 700 Skid Steer Loader Tilt Hydraulic Cylinder Seal Kit 7137771
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$13.99
Time Remaining: 5d 20h 17m
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Bobcat 720 Skid Steer Loader Tilt Hydraulic Cylinder Seal Kit 7137771
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Bobcat 610 Skid Steer Loader Tilt Hydraulic Cylinder Seal Kit 7137771
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Bobcat 611 Skid Steer Loader Tilt Hydraulic Cylinder Seal Kit 7137771
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Bobcat 611W Skid Steer Loader Tilt Hydraulic Cylinder Seal Kit 7137771
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Bobcat Hydraulic Cylinder Seal Kit 6803313
Bobcat Hydraulic Cylinder Seal Kit 6803313
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Bobcat Excavator main hydraulic gear pump 6674941 SHIP SAME DAY
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$1,889.00
Time Remaining: 6d 2h 16m
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Bobcat 630 Hydraulic Oil Cooler Skid Steer 631 632
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$99.99
Time Remaining: 6d 3h 10m
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Bobcat 630 Hydraulic Tank Reservoir Skid Steer 631 632
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Bobcat 863 C Misc Hydraulic Lines 873 T200 864 Skid Steer Skidsteer
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Bobcat Hydrostatic Hydraulic pump T250 T300 864 and similar
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$1,795.00
Time Remaining: 6d 13h 52m
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Faster Female 1 2 Hydraulic Flat Face Coupling Bobcat Skid Steer Loader 6667348
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New Bobcat Hydraulic Hose Part  7 214 602  7214602
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New Bobcat Hydraulic Hose Part  7214599 7 214 599
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Bobcat Hydraulic Oil Vent Cap 751 753 763 773 843 853 863 864 873 963 Skid Steer
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$18.49
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Bobcat Hydraulic Oil Vent Cap 520 530 533 540 542 543 553 Skid Steer Tank
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Bobcat Hydraulic Oil Vent Cap 645 653 730 731 732 741 742 743 Skid Steer Tank
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BOBCAT 6680018 FEMALE HYDRAULIC COUPLER S850 T140 T180 T190 T200 T250 T300 T320
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Bobcat Flat face Quick Coupler Hydraulic T140 T180 T190 T200 T250 T300 T320 IL
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Bobcat Hydraulic Spreader HS8 S N AC1N00101 Operation  Maintenance Manual 3 11
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6673913 6672830 Bobcat High Flow Hydraulic Pump 863 873
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$1,116.96
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HYDRAULIC LIFT CYLINDER FOR BOOM OFF A BOBCAT M371 SKID STEER
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admin posted at 2009-12-23 Category: Heavy Equipment