Originally Posted By: CharlieBauer
Originally Posted By: btanchors
For those of you monitoring this thread, do you really think this UOA, and accompanying trend,
is *that* bad? That 10K is way too long of an OCI?
Yes but like I've said I see 10k miles as your limit. When oil goes bad, the quality deteriorates quickly. Why be someone who gets uoas and wants to maintain vehicles well if you want to also risk pushing it too far for the sake of 1000 or so miles?
No, your 10k UOA is not bad OP.
Instead I would say it's more than adequate ,if not saying it's good .
The test of the pudding is in the eating , as this UOA demonstrates you have good metal wear rates ...... don't let noises like OM recommendations, engine design features , special this,special that etc confuses you.
The near zero metal ppm wear in lead ,tin,nickel ,chromium ,manganese etc indicates pristine conditions of all plain bearings and cam lobes/followers within .
The aluminum and iron ppm are not very low ,neither are they high /very high ....
but one thing is sure , they are not detrimental .....
more so if there is no indications of blowby and pistons / liner oil consumption phenomenon .
Just my