Re: [DML] Low Oil Pressure @ 10W30

["content22207" <brobertson@xxxxxxxxxxxx>]

Are you sure you weren't having the imfamous DeLo oil pressure gauge
problem? Did the low oil pressure light come on as well? (Have never
heard any complaints Re: that particular sender -- must be common to
other successful PRV applications). What exactly were the symptoms
from the engine? Even though the PRV doesn't have lifters to pump up,
you should have heard clattering from the rest of the valve train. Too
thin oil also leads to loss of compression from cylinder side walls.

50 weight oil is really made for extremely high heat environments,
like auto racing. Super and turbo charging may also require it. Can't
imagine any benefit in a normally aspirated engine unless internal
wear is extremely bad.

BTW: oil pump itself doesn't create pressure. It simply moves the oil.
Pressure is created by restriction of oil passages, bearing
clearances, etc. Replacing the pump won't help if pressure is being
lost elsewhere in the engine. PRV adds a new wrinkle with its oil
driven timing chain tensioners -- in their outmost position oil will
leak past them and drop straight back into the pan, leading to a loss
of pressure.

Bill Robertson
#5939

>--- In dmcnews@xxxxxxxxxxxxxxx, Scott McMullan <smcmullan@xxxx> wrote:
> 
> And when I tried running 10w30 in my Delorean, I had no end of trouble
> with my oil pressure, unce the engine was run for about 30 minutes. 
> Switched back to 20w50 and haven't had a bit of trouble since.
> 
> I seem to be the only one reporting this particular problem, so maybe
> I need a new oil pump, but a case of oil will keep me on the road for
> now.








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