Having just replaced the= original radiator on my 87GL with one of Bus Depot's South African models,  I= thought those listees with marginal or low oil pressure might be = interested in the results. The conventional wisdom of this list seems to suggest worn bearings as the usual cause of low oil pressure on our aging 2.1 engines.= While this  may be true in many if not most cases, I am delighted to= report this was not the case with my 87, now sporting 165,000 miles on = its original engine and heads.

I previously attempted to increase my = oil pressure by rebuilding the oil pump and did achieve some improvement from= this painful procedure. However, my oil light continued to come on after = extended highway or mountain driving and especially after prolonged idling in city= traffic. My VDO oil pressure gauge often indicated as low as 3  to 5= psi at 1000 RPM making me fear it was past time to give Boston Bob a call.

My factory temperature gauge was always above the center range = LED light after warm up, often around 3/4 of the way to the top, and even = higher in stopped city traffic. I had previously replaced the thermostat and = radiator fan switch with lower temperature models with no improvement.

= After replacing the radiator I was simply amazed with the increase in oil = pressure.
Thus far I have not seen it below 10 to 12 psi at 1000 RPM after an extended mix of interstate and city driving. I now have 35 to 40 psi at = 3000 RPM after warm up and my temperature gauge stays just to the low side of = the light, even after allowing the engine to idle for extended periods.
<= BR>I now feel like "Jimmy Joe" has a new lease on life and would highly = recommend this procedure to anyone doubting the cause of their marginal or low oil= pressure.

Mark Smith
West Virginia