Re: ZDDP Additives
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Re: ZDDP Additives
- From: Bill M <y1topbanana73@xxxxxxxxx>
- Date: Tue, 16 Dec 2014 13:12:33 -0500
I'm going to do this as best as I can without starting a flame war, but...that makes NO freaking sense. Just because it's 10w40 weight (vs.10w30) does NOT mean it's going to arbitrarily "tear up your engine". Your "short and simple answer" is just plain wrong, The the additive packages that you are speaking of provides detergent agents, anti-scuff agents, etc. Newer additive packages may and are generally not good for old cars with flat tappet cams due to the lack of the zinc anti-scuff agents...they tear up catalytic converters in new cars. There's nothing wrong with 10w40 oil if has an applicable rating.
The way they create a multi-weight oil is by placing spring shaped polymers into the oil...they are in EVERY multi-weight motor oil. When the springs are cold, coiled up and compressed, it acts like 10 weight. Conversely when the springs get hot, they expand and thicken the oil. I know this for a fact as my father is a PhD chemist.
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