Join Date: Jun 2011
Location: East Central Iowa
Fine time to bring up the point that this is why you shouldn't use engine oil, IE:the MoCo's SYN3, in transmissions and chain/clutch cases, and it has to do with detergent vs non-detergent oils.
Detergent oils: "Detergents" are chemical additives that pick up and carry foreign materials in suspension so that they can be filtered or flushed away. This is how your laundry or dish detergent works, it picks up the proteins and solids that the stains are made of, holds them in suspension and floats/carries them away with the water when it drains.
Detergent motor oils do the same thing, they pick up the foreign materials and contaminants and carry them to the filter where they get removed rather than being circulated continuously through the bearings and other tight tolerance areas of the engine. If there's no filter, it continues to carry the junk around through your motor.
Non-detergents do not have that additives that suspend and carry the contaminants. Anything produced by the engine or trans, or introduced from the outside falls out of suspension and ends up laying in the bottom of the cases. While it doesn't get filtered out, it also doesn't get continuously circulated through the gears and bearings either.
So, you decide. Most oils used in transmissions, gear cases or other non-filtered applications are non-detergent, most engine oils are heavy in detergents.
Which is the proper oil to use in your engine and which in your transmission??
2015 RGU CVO........under continuous change......