So my oil pressure gauge started reading high after the change to Rotella 15w40. I figured it was maybe not the right choice. But when the gauge pegged I knew there was a problem. Looking at posts the reality is the factory gauge can be a problem.
So I installed an aftermarket mechanical oil pressure gauge, my favorite brand is Equus. I have used them in the past with great success and the price is very economical.
The first pic is cold at high idle, second set is warm.
So I need to figure what is going on with the factory gauge! It does drop a little when the engine is warm but no lower than the 75% mark.
Also for 283000 miles the oil pressure is looking great and within FSM specs!
So I installed an aftermarket mechanical oil pressure gauge, my favorite brand is Equus. I have used them in the past with great success and the price is very economical.
The first pic is cold at high idle, second set is warm.
So I need to figure what is going on with the factory gauge! It does drop a little when the engine is warm but no lower than the 75% mark.
Also for 283000 miles the oil pressure is looking great and within FSM specs!
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