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Great question Mr. @MB Mark mate. I've been wondering about this... Most of the time , unless a hot / humid day, mine lingers 77C-85C-ish. Unless pushed, it won't go beyond that. Since December i've been using Penrite 15w-50. I've noticed over the years , during a long solid highway run as the temps go up summer time, AC on, it goes into high 80s. And the car feels, smoother, free-er so to speak... High country low-range hill climbs and it's been working for a prolonged time, after that it just feels "zippier".
Excuse the stupid words ive come up with for describe it. Is it placebo effect or is there science to this madness method???
How would one know a good "running temp" motor vs. oil? I had a look at specs of the oil and can't see much "temperature" ranges mentioned. Whats a proper warmed up TD range?
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