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So during normal oil consumption it's consuming the minerals as well. While I have a damp spot at the rear of the engine I typically do 5k oil change intervals and never had to add oil in between. This engine has an oil level sensor on it and it turns on just shy of being a quart low.

Help me understand how the makeup oil delutes the results please. I mean, when I drained the oil I can tell you there wasn't 11 quarts of it. It was short of 8 quarts actually so I'd think that since there was less than 8 quarts then the concentration would be higher than if it was at 8 quarts...

You guys seem to like my UOA, wish I knew why. Is there some kind of tutorial around here to help me understand this report? I originally did this for the benefit of a Land Cruiser forum and knew there were a few guys there who would know what this means. In fact a member here will receive...

driving habit is asfault at 70 mph mostly. The oil was only in the truck for about 4.5 months. I'm now running 5w30 as it's winter time. The truck has an 8 quart capacity. And I never added anything to the oil or fuel and ran the same filter for the whole 14,800 miles.

First time poster and I'm doing so at a request from a member of a different forum. I have a 1996 Land Cruiser with @ 190k on the clock. I bought this truck with 38k and have ran M1 since then. PepBoys had a calander with a 1/2 off coupon in it this year and I bought 20 calenders. I would...