I'll contribute my experiences with oils on the present thread. Being a
young 69, I have used quite a few of them.
I read several years ago that Pennzoil was no longer made from Pennsylvania
oil, and was made from West Coast or Near East oils exactly as were most of the
other oils. One of their claims over the years was that "Penn oils" were
superior in lubrication., due to a slightly different chemical composition of
the original oil. I know nothing about the additives to this oil, but
remember reading a Consumer Digest report on additives years ago-which stated
that the more additives there were, the in less oil there was in the
can. The chemicals used replaced like amount of oil, resulting in less
lubrication. Sounded logical to me..
ANYWAY- For years I used Wolf's Head oil, another "Pennsy" oil but when
moving to Maine from California years ago switched to Pennzoil as I couldn't
find Wolf's head. I was still using 30W in my 56 N.Y. wagon. One
frosty morn (-10) we started for a nearby town. Within ten miles a rod bearing
started banging, and the engine had to be rebuilt. There was no problem with
this engine before that day. Assume there cold oil didn't make it to the
bearings in time. Using 30W of course, didn't help-but I was fresh from CA
and didn't know Maine got that cold!
On another occasion I attempted to drain the oil on my pick up truck one
morning, temp around -20 F Pulled the plug, nothing came out! The oil had
jelliefied! If I had started the truck I probably would have lost that engine
also. Don't remember what weight, but remember the experience.
Pennzoil used to be very popular with the motoring crowd back in the
50's-60's, as was Wolf's Head. If, as I read, they no longer use oil from
Pennsylvania, whatever edge they had has disappeared. I wonder what folks in
Maine did before they had multi-viscosity oils? Probably switched to 10 W or 20W
when winter came? Anyway, my son, who is parts manager for the local Buick
Agency (regretfully) insists that Valvoline is the best, so I use it
to humor him!!
I would be interested in anyone else's experience with
Pennzoil-
Ted