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UOAs from hydraulics on 2021 Deere 333G high flow (~9 gal capacity). Factory fill Hydrau XR AW46 (I believe a full synthetic). In the first few months I owned it, 3-4 fittings came loose and a few hoses had to be replaced (gotta love Covid-era quality control), ended up having to add around 5...

The Rotella 15w-40 had actually sheared down to about 12.5 cst @ 100° (with a small amount of fuel dilution per Blackstone’s calculations). But no, I don’t credit the oil change with the entire 2mpg, it just makes me feel better about paying twice as much for oil. Factors like a new air filter...

I’ve got a ‘22 6.7. In my experience, people with ‘19 and earlier engines will report different findings with different oils (T6 5w-40 solves typewriter noise, doesn’t produce abysmal UOAs, etc) than those of us with ‘20-up engines. @RDY4WAR hit the nail on the head. I’ve done 5000 mile OCIs...

I’ve been searching this forum on an almost-weekly basis for the last five years but I never came across this thread. I’m guessing there are plenty of people in the same boat as OP. I finally created an account to post a few new VOAs but figured I’d keep this thread going with my two cents. My...