Oil Pressure

[flyinhawaiian01]

It wasn't you, Dave! Something's goin' on with the forum, the moderators are aware of the problem, just thought it was funny that the like button is missing this morning!

 

[Bad_Vision]

I too don't believe there's anything wrong with the way that engine is running. Its simply an older system that fluctuates more than newer vehicles.



I would agree that you will not see any change going from a 10W-30 to a 5w-30, as the "W" stands for winter. Unless you're starting it up in temps below 32ºF right now, the winter number doesn't play much of a part in the viscosity of the oil.



I would try running the 15W-40, or really, at this point in time, just go to a straght weight oil. 40 weight would allow you to see whether the pressure comes up a bit, it will also create a thicker barrier on metal surfaces for added protection.



As a reference, my truck has always shown, when fully warmed up, almost no pressure on the stock gauge at idle, and will run up to just below the halfway mark on the gauge at anything over 1600rpm or so. I also run either Royal Purple 10W-30 or Mobil1 10W-30 in it, its always seen quality oil and I've not had any oiling issues with the above pressure.

W is actually weight not winter.

Do not use 15/40 or 20/50 that is harder on your pump and will decrease the amount of oil making it to the upper section of your engine.

 

[flyinhawaiian01]

Nope, it doesn't. It stands for Winter.

Google this:

what does the W stand for in multi grade oil

Read the first 20 or so posts, all will say that the "W" in multi-viscosity engine oils stands for Winter. That number before it designates what the oil's viscosity is at 0ºF. At 212ºF, the viscosity will mimic the second number. It is a relatively lineal change as the engine heats up to its temp.