Oil “consumption” between service intervals should be immeasurable. With tighter tolerances in engines and specifications calling for thinner 0W20 oil and such, having a good oil is more important than ever. Again, I have not had any issues with the lifters clattering since using the Rotella. I suspect some of this was related to dirty oil but some might have been that they had been sitting a while before I got them and they bled down. They both clattered like mad when first started. The Kohler Commands with the hydraulic valve lifters run great on the Rotella. I usually get my mower equipment or just the engines used so have no clue how they were treated or what oil they had before I get them. Many of them used to puff blue smoke on start and use a little oil but this went away within a couple hours of operation after switching to Rotella. The mowers get a Rotella synthetic 5W40 and seem to eat this stuff up. I run Mobil 1 in pretty much all the cars these days as well. The stuff is still sold and meets many of the modern specs so I would have to think this has been improved. I would have to assume that the conventional yellow bottle has been improved but I don’t know. This stuff is supposedly one of the better synthetics on the market and meets the GM Dexos specification. I have used some of the Platinum product in more recent years. I always saw this in older engines using the standard Pennzoil yellow bottle myself.
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