The comment about using Quaker State oil reminded me of an experience back
in about '75. As a USAF R&D manager, I had a young physics PhD working for
me. He had a whole herd of kids that he hauled around in a 10 yr or so old
Chevy station wagon with about 200,000 miles on it. He was almost as proud
of that wagon as he was those kids, but knew nothing about mechanical
stuff. One day he called me in a panic: "I had the oil changed in my car
a few days ago and now the dipstick looks like it's covered in tar and the
engine's making funny noises!" When I got to his house and pulled the
dipstick, he was right -- the darned thing DID look covered in tar, and the
engine clattered something awful. Rebuild time, obviously.
I don't know whether I knew before or it came out in the discussion, but
he'd ALWAYS used straight 30W Quaker State oil in that engine. But with
the modern fad being detergent oils, he'd told the oil change shop to put
some in there. Since he was really in no financial position to have the
engine rebuilt, I suggested he have the oil changed again and go back to
the 30W QS. After about a week, the engine was running great again, with a
clean dipstick! Oh yeah, when one looked in the caps on the rocker covers,
there was just a big black gob of carbon on EVERYTHING! I've never used
ANY Quaker State oil since then.
One of life's lessons...
Ken H.
On Thu, Feb 20, 2020 at 7:14 PM Vadim Jitkov via Gmclist <
> Valid point. As far as I know you have to not keep the engine at constant
> RPM for too long during first couple hundred miles. I like the idea of
> the magnet on the oil filter. I cut open filters at oil changes and check
> how everything looks in there. Would be interesting to see what kind of
> goop magnet will attract out of the oil during the breaking oil change.
> I ran 5x30 Quaker state oil on this engine. Had served me well so far.
> --
> Vadim Jitkov
> '76 Glenbrook 26'
> Pullman, WA
>
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in about '75. As a USAF R&D manager, I had a young physics PhD working for
me. He had a whole herd of kids that he hauled around in a 10 yr or so old
Chevy station wagon with about 200,000 miles on it. He was almost as proud
of that wagon as he was those kids, but knew nothing about mechanical
stuff. One day he called me in a panic: "I had the oil changed in my car
a few days ago and now the dipstick looks like it's covered in tar and the
engine's making funny noises!" When I got to his house and pulled the
dipstick, he was right -- the darned thing DID look covered in tar, and the
engine clattered something awful. Rebuild time, obviously.
I don't know whether I knew before or it came out in the discussion, but
he'd ALWAYS used straight 30W Quaker State oil in that engine. But with
the modern fad being detergent oils, he'd told the oil change shop to put
some in there. Since he was really in no financial position to have the
engine rebuilt, I suggested he have the oil changed again and go back to
the 30W QS. After about a week, the engine was running great again, with a
clean dipstick! Oh yeah, when one looked in the caps on the rocker covers,
there was just a big black gob of carbon on EVERYTHING! I've never used
ANY Quaker State oil since then.
One of life's lessons...
Ken H.
On Thu, Feb 20, 2020 at 7:14 PM Vadim Jitkov via Gmclist <
> Valid point. As far as I know you have to not keep the engine at constant
> RPM for too long during first couple hundred miles. I like the idea of
> the magnet on the oil filter. I cut open filters at oil changes and check
> how everything looks in there. Would be interesting to see what kind of
> goop magnet will attract out of the oil during the breaking oil change.
> I ran 5x30 Quaker state oil on this engine. Had served me well so far.
> --
> Vadim Jitkov
> '76 Glenbrook 26'
> Pullman, WA
>
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
> http://list.gmcnet.org/mailman/listinfo/gmclist_list.gmcnet.org
>