I just changed the spark plugs on my Subaru (need to be somewhat acrobatic to do), and, when finished, I thought I'd check the front transaxle fluid level...like it would have actually changed from the previous 20 times I've checked it the past couple of months. Anyway, I got a drop or two of the AmSoil Severe Gear 75-90 on my fingers, and it instantly removed all the grease, grime, antiseize, dirt from my fingers. I mean instantly! If it weren't so expensive and so foul-smelling, I'd use it to clean up with after wrenching. It must keep the inside of that transaxle spotless!