Reply to "Oil change"

old and slow (Guest)

oil man,
My 72 uses 7 quarts, I replace one quart of Mobil 1 with a quart of "Prolong" It cost about 25-29 dollars a quart. I used it in both of my Porsche automobiles with excellent results, as well as my Ranger Pick-up. Prolong is the only additive recommended by Performance Engineering, a Porsche Racing Engine manufacturer.

3/19/025:04 PM

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