Roger and All,
I had a Mustang GT (w/ a 351W and T-5)a few years ago that had similar
symptoms using synthetic.
After about 20,000 miles of regular dino juice (Quaker State), I switched to
Mobil 1, 15w40 (IIRC). Shortly after my oil pressure got VERY low, and
occasionally showed nil. Never knocked or anything, but
Scared the BEEJEESUS outta me. I talked to several people, including the guy
who built the engine, who said change the oil back to regular and see what
happens. I did, 10w40 QS, and the pressure came back to what it had been
previously.
VERY Strange.
Guess that some engines just don't like synthetic???
Brian S.
5? Bugeye under resto
>I have however seen advice about the Synthetic oil, and that was to break a
>new engine in on regular oil and switch to synthetic after break in. Seems
>the synthetic is too slippery to let anything seat.
>
>This is the engine that I've been running for 4 months. I broke it in with
>20W40 regular oil and then switched to Mobile One. See, I listen to what is
>put out over the net!
>
>Roger
>
>///
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