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Re: What's the best oil for a old tired engine?
Quote:
Originally Posted by 85Bowtie
Rotella is 15w-40. It has more zinc content which is good for flat tappet cams in older engines.
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From what I've read, zinc has been removed from most all oil, including Rotella. I use regular branded oil and add ZDDP with each oil change.
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Bryan
'99 Silverado 1500, 4.3, 5-speed, reg cab, short bed
'50 Chevy 2DR Hard Top, 350/350, M2 Front End, 3:08 gear, cruiser.
'30 Model A Pickup, suicide front end, 350, 350, traditional style hot rod.
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