Lowering Oil Viscosity

Author Topic: Lowering Oil Viscosity  (Read 334 times)

Offline LAA66

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Lowering Oil Viscosity
« on: August 25, 2013 - 01:15:40 PM »
 The hydraulic system in my tractor that works the rams and steering uses engine oil instead of standard hydraulic fluid (which was recently changed using Delo 15-40). Problem is after moving up north, during the colder winters it is way too thick. The controls work very slowly until an hour or so after the oil warms and I'm worried about damaging seals and or the pump.

 So instead of draining out 15 gallons of new oil, would it be possible to thin down the viscosity with say 5w-30? Some say it should be ok as long as the same brand and type oil is used but I'm still unsure.

 Thanks,
 Jon   




Offline AARuFAST

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Re: Lowering Oil Viscosity
« Reply #1 on: August 26, 2013 - 11:13:58 PM »
You can interchange synthetic and conventional oil as long as the synthetic motor oil product and conventional motor oil product meet the viscosity and performance requirements outlined in the vehicle’s owner’s manual. Synthetic blends, in fact, are a mixture of conventional and synthetic-base oils
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