I noticed that when I start from a dead stop, my oil preasure gauge goes from the 30, where it is supposed to be, down to almost 0 and then back up to 30. Is it supposed to do that, or is there something wrong?
I have just purchased a 2003 Suburban. I really like it. Before purchasing the vehicle, I did have it checked out by a mechanic and everything checked good.
However, just in the last day, I noticed a similar problem. The pressure starts off normal, but drops to almost 0 after about 30 minutes of driving. The oil level is good. Any thoughts? I have not changed the oil yet, but maybe the last oil change had the wrong weight (could this be)?
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