Is high engine oil pressure harmfull to 350 engine with about 25000 miles?

Asked by Jun 14, 2015 at 01:37 PM about the 1999 Chevrolet Silverado 1500 STD 4WD Standard Cab LB

Question type: Maintenance & Repair

After oil/filter change idle pressure rise to ~60 cold, then after warm-up ~35 @ idle, 55 to 58 @ normal operating engine speeds. Prior to recent oil/filter change all pressures were in normall ranges.

4 Answers

"My 1997 Tahoe with 216,000 runs at ~41 lbs PSI hot and ~55 lbs cold" (That is a quote I don't have a Silverado or any GM product) To see the discussion thread, there is much more, go to......... http://www.gmtruckclub.com/forum/threads/what-is-your-oil-pressure-1999-suburban-vortec-5-7.23733/

49,295

What brand of filter are you using? I would change the oil filter to a genuine A/C filter immediately. Something is wrong if oil pressure changed very much after an oil change. The wrong weight of oil could also explain it.

26,105

all is normal ...was your last oil trashed?washed out/thin?..as bob said , weight...did you change from a low to higher viscosity.

18,775

I see nothing wrong with any numbers

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