Reply to "Normal engine life"

panteradougMember

quote:
Originally posted by 4V & Proud:
flat tappet vintage engines Need their proper correct oil to live a long life

the latest & greatest rendition of the best selling name brands are not It

Yup. Make sure you have plenty of ZDDP in the oil. The camshaft and lifters need this stuff to last. It's much better to have too much than not enough.

There are two big reasons that engines are now running roller lifters. One was to reduce internal friction and give manufacturers a tenth on a mile per gallon better fleet average but by far the biggest reason was that ZDDP winds up fouling the catalitic converters. They are REQUIRED to last a minimum of 100,000 miles. The ZDDP won't allow that.

10/17/143:57 AM

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