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-   -   Heavyweight oil for my 2001? (http://www.jeepforum.com/forum/f9/heavyweight-oil-my-2001-a-1383569/)

TJSunny1 06-20-2012 01:40 PM

Heavyweight oil for my 2001?
 
So I have a 2001 with what I think is low oil pressure. At hot idle its at about 12psi and at 1300 RPM its at about 35 psi. What concerns me is when I do a hot start, it takes up to 7 or 8 seconds to create pressure and the check gauges light comes on.

I guess I have two questions: Is this normal? Would putting a heavier oil in help the problem?

I run 10w30 right now.

Thanks!

lwszabo 06-20-2012 02:10 PM

Heavier oil is not a good idea. The vehicle was designed for a certain oil and that's what it needs. You need to find out what the problem is and not try to mask it. Start with the cheaper stuff like sending units etc...good luck!

danb303 06-20-2012 02:39 PM

How many miles?

Typical signs of worn bearings. I would go to a little thicker oil and give that a shot. Lots of people go to Rotella. Trying a new sending unit might be worth the $

I would try the Valvoline Racing oil VR-1. My brother swears by it, says it has quitened his down a lot.

Make sure you are using a good filter... I run Wix. I had an issue with a Mopar filter and haven't used one since

lwszabo 06-20-2012 04:20 PM

Quote:

Originally Posted by danb303
How many miles?

Typical signs of worn bearings. I would go to a little thicker oil and give that a shot. Lots of people go to Rotella. Trying a new sending unit might be worth the $

I would try the Valvoline Racing oil VR-1. My brother swears by it, says it has quitened his down a lot.

Make sure you are using a good filter... I run Wix. I had an issue with a Mopar filter and haven't used one since

Wix makes Mopar filters!

BioTex 06-20-2012 04:29 PM

Install a mechanical guage so you are taking a lot of guess work out of the diagnosis. Then report back what your "real" pressures are.

lwszabo 06-20-2012 04:30 PM

Quote:

Originally Posted by lwszabo

Wix makes Mopar filters!

Sorry I was wrong. Purolator makes Mopar

TJSunny1 06-20-2012 05:28 PM

oh sorry. its got 127,XXX on the clock. And.....uhhh...a mysterious coolant leak..... But my oil shows no signs of contamination. Im gonna send a sample to blackstone though.

BamaJeepman21 06-20-2012 05:33 PM

Quote:

Originally Posted by danb303 (Post 13750262)
How many miles?

Typical signs of worn bearings. I would go to a little thicker oil and give that a shot. Lots of people go to Rotella. Trying a new sending unit might be worth the $

I would try the Valvoline Racing oil VR-1. My brother swears by it, says it has quitened his down a lot.

Make sure you are using a good filter... I run Wix. I had an issue with a Mopar filter and haven't used one since

Are bearings easy to replace or is it a major overhaul?

VietVet67 06-20-2012 06:21 PM

YES to the above try 20-40 and see if that helps at that mileage it won't hurt the engine maybe mileage a little--I run 15/40 in mine in Arizona all the time at 30K miles

appfire 06-20-2012 09:11 PM

Quote:

Originally Posted by TJSunny1 (Post 13751090)
oh sorry. its got 127,XXX on the clock. And.....uhhh...a mysterious coolant leak..... But my oil shows no signs of contamination. Im gonna send a sample to blackstone though.

My '98 is doing the exact same thing. 2.5 motor with No noise or rattleing in the motor, low oil pressure after the motor warms up. Mechanical guage shows the same pressure as the factory guage. Small coolant leak, no signs anywhere. Used some castrol 20w50 for a few days and did not really make much difference in the pressure when it warmed up. Also used some gunk motor flush and that also did not make any difference. I am assuming worn bearings. Anybody else have any other ideas?

Chris

danb303 06-21-2012 06:54 AM

Replacing the bearings is a major project.

What temp does your jeep run at?

If you can stay around 12-15 psi when hot then I wouldn't worry about it. LOTS of jeeps are riding around with the oil pressure that low... and LOTS of jeeps are running Rotella for that exact reason.

appfire 06-21-2012 12:54 PM

Temp is normal, always just below the 210 mark when fully hot. Its never overheated. I add maybe a cup of antifreeze every other week. When the motor is fully hot, the pressure guage will be around 15-18 psi driving 55mph down the road.

Chris

appfire 06-21-2012 12:55 PM

Is rotella that much safer or better? What weight?

Chris

JBTJ 06-21-2012 01:01 PM

Quote:

Originally Posted by appfire (Post 13755190)
Is rotella that much safer or better? What weight?

Chris

No, it's no better than any other quality motor oil.

danb303 06-21-2012 01:20 PM

It's just a HD 15w 40 motor oil. And its a quality motor oil. I don't use it but if I had one that was getting that close to 10 psi I certianly would try it. It's only around 14 bucks a gallon. Give it a shot


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