Quote:
Originally Posted by ksa8907
Shouty... there's a real scientist...
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I stopped watching after he said deep-cycle batteries aren't lead-acid, and that Priuses apparently use lithium-ion starter batteries.
Back when I frequented the Viper Club of America forum, there was a poster who was a retired oil formulator for Texaco and Shell. He never bothered with synthetic oil for his Viper, using Shell Rotella 15W-40 non-synthetic diesel oil, and he drove his car through the winter (he had more than 100,000 miles on it at the time, very unusual for a Viper). He also said that the myth of most engine wear occurring on startup is just that, a myth.
Everything I've read about startup wear has pointed to
cold starts as the problem, with
papers as far back as 1960 attributing the increased wear to condensed combustion byproducts and water. Modern start-stop systems don't turn the engine off until the coolant has reached a certain temperature (101 degrees F in the Prius for shutdown at vehicle stop and low speeds, 154 degrees F for full shutdown capability), which avoids that problem entirely.