I recently installed a wet oil pressure gauge to find out why my oil
pressure light keeps flashing.

When I first start the engine, 20 psi at idle and 30-50 on the freeway.

After 3 miles of driving, 5 psi or less at idle and 20 psi on the
freeway.

I guess about 40-60 psi on the freeway going about 60mph is nice, but
it's consistently at 20psi.  Driving home on residential streets at
30mph, I get about 15psi reading.

I'm running 20w50 oil with viscosity thickener.

Should I still drive the van around with the family, or is this oil
pressure so low that I should be taking apart the engine?  I cleaned
the oil relief valve/plunger.  Should I stretch that spring out more?

1983.5 Westy with a rebuild about 70K miles ago.

-- Craig

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