Re: H Oil Pressure

Posted by Mark on February 02, 2004 at 10:02:24 from (199.46.199.233):

In Reply to: H Oil Pressure posted by BB on January 31, 2004 at 19:01:33:

I bought a tractor one time and the guy said that it didn't have any oil pressure because the gauge was broken.

What was broken was the rear main seal....was gone.....$1000 and an engine overhaul later pressure was great. Glad I only paid salvage bucks for the machine.

Loosing oil pressure on any engine in my book is one or both of 2 things. The engine dimensions grow with temp or the oil breaks down (huge viscosity change) and squirts out of the passages because it thins down and as a result you can't hold pressure.

I agree that high flow and low pressure is an ok combination, but I like to see oil pressure. It insures me that there is slickum between the mechanical parts and they won't wear.

If you are using fresh 30W single grade or fresh Truck oil 15W-40 (not 10-40) your problem is probably due to engine wear (including the pump described). But if you are using automotive type 10-30, you'd be surprised what a heavy duty oil will do for you when you work your tractor for an hour or so and cut the throttle back to idle and look at how much oil pressure you have. Even in a gas tractor, you need the heavy duty oil that will retain it's viscosity with temp. Shell Rotella T, Chevron Delo or Mobil (xxx) forgot the name but it's in a black container and says Million Mile Oil. Walmart sells it.
Been there, done that.

Mark

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