Nessmuk
Well-Known Member
What's the highest percentage of STP I can run with 15-40 oil in my very low oil pressure engine?
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50% STP?
- Thread starter Nessmuk
- Start date
ak diesel driver
6.5 driver
In my mind it would only be limited by cold starts.
MrMarty51
Well-Known Member
I started using LiquiMoly in My truck.
A product that adds platlets to the bearings and surfaces sure could not harm. It says it is good to use on turbo engines too. Made in Germany. I got this from NAPA. Part number 2009.
I tore down a 360 dodge engine years ago. the original owner had used nothing but Standard oil with moly, there were absolutely no scores on the bearings or cylinder walls.
A product that adds platlets to the bearings and surfaces sure could not harm. It says it is good to use on turbo engines too. Made in Germany. I got this from NAPA. Part number 2009.
I tore down a 360 dodge engine years ago. the original owner had used nothing but Standard oil with moly, there were absolutely no scores on the bearings or cylinder walls.
Nessmuk
Well-Known Member
I have a 2 gallons oil capacity. I added 4 pints (2 qts) STP to it. Oil pressure came up to 10 at idle, from 2 psi.
Nessmuk
Well-Known Member
I'm going to try Mystic 15w50 and see what comes of it.
MrMarty51
Well-Known Member
Boy Nessmuk, that is the lowest oil pressure I have ever heard of and still not have rods knocking. Unless it`s a Harley that has needle rollers for bearings.
I suppose You have tried a mechanical gauge on it too.
I suppose You have tried a mechanical gauge on it too.
Nessmuk
Well-Known Member
Ayup.
MrMarty51
Well-Known Member
Might be that rolling in a set of main and rod bearings and a new oil pump would bring the OP back up to a reasonable level.
My 93 K1500 with the 350, at 200,000 miles, the OP had dropped way off. I installed a new timing chain/sprocket set and a new oil pump and the OP went back up to where it had been, over 40 PSI hot and on the road, about 35 hot at idle.
My 93 K1500 with the 350, at 200,000 miles, the OP had dropped way off. I installed a new timing chain/sprocket set and a new oil pump and the OP went back up to where it had been, over 40 PSI hot and on the road, about 35 hot at idle.
Nessmuk
Well-Known Member
I tried. Mains, rods, pump, and turbo. Gotta be the ones that require pulling the engine.
Maybe I can connect a bicycle pump to the oil pan and pump as I drive? I bet a vacuum pump hooked up at the latest cam bearings would pull the oil through. Maybe I'll put a manual fuel pump in and pump extra oil with that. Would a pressurized 55 gallon drum on the roof provide a boost to the oil system through the warning light opening?
Maybe I can connect a bicycle pump to the oil pan and pump as I drive? I bet a vacuum pump hooked up at the latest cam bearings would pull the oil through. Maybe I'll put a manual fuel pump in and pump extra oil with that. Would a pressurized 55 gallon drum on the roof provide a boost to the oil system through the warning light opening?
Nessmuk
Well-Known Member
Oops, I forgot to put the tinfoil in my hat. I'm better now
@MrMarty51 The oiling diagram out of the military repair manual explains this. Priority oiling to the cam bearings... So if they get loose you loose a lot of pressure. It could also be a lifter bore. There is an oil cooler bypass valve and oil filter bypass valve in the oil filter area.
MrMarty51
Well-Known Member
That explains a LOT. Thank You.
I guess I only look for information on an as needed basis.