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1946 dodge oil pressure


Black betty

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2 hours ago, Don Coatney said:

Why do you think the engine needs extra zinc? 

 

Uh oh...not this debate again! LOL I use zddp additive in both my truck and my 67 Monaco, todays oils don’t contain the amounts we need, other then oil for classics like Joe Gibbs etc, but I find those very expensive and prefer to run moderate priced oil with additive.

 

Im running about the same oil pressures, 50 cold and mid 30s hot at idle and that’s checked with a manual gauge as well.  If you were over 50 I would maybe be concerned that you have a pressure relief valve issue, but a well built engine should be high.

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The catch is that most engines that require a cam when they get rebuilt are likely well beyond the signs of knowing if it was an oil failure and most likely it actually wasn’t because most of these trucks went out of service long before oil changed.  Then we run into a lot of later built engines likely never seeing enough service to cause out in out failure.

 

ZDDP is a pretty cheap insurance policy in protecting a vital part of the engine. I also don’t believe quality standards in oil are as tight as they should be, lots of times if you bought 10/30 Esso oil here in three different locations it was three different colours...cheaper it was the lighter it was

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