Quote:
Originally Posted by Destroyer
I've always used hydraulic oil... (the type you use in hydraulic jacks) Never had a problem with it, but now that I know about 10w-30 I think I'll start using that. (cheaper by far)
|
I know that motor oil allows for the suspension of water within the oil. When the oil temperature rises above 212 F, the water "boils" off and exits through the vent in the valve cover (in a combustion engine). Hydraulic fluid doesn't allow for this, and generally allows for the collection of water, either in a filter or the bottom of a sump.
I would have concerns using motor oil in a system that never gets hot enough to remove the water in suspension.
Just my $.02