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458 Posts
So I took the YJ out for our first extended ride since buying her.
When hot I noticed a drop in oil pressure at idle .... too low for my liking.
Realizing I bought this in the dead of winter and the PO just did an oil change I figured he might not have put in the correct oil. Pressure was dropping to below 10 at idle and going up to almost 30 at 2000 RPM.
So I took her home, drained all the oil and installed a fresh filter as well as some 10W30. Went for a run and things looked much better. Hot idle was now hovering at just below 20 PSI and at 2000 RPM peaking to almost 40 PSI.
I'm happier, but not static.
Ok so she is old and probably tired ...... 1995 YJ ..... 245,000 miles ...... 2.5 L
My question is this ......
Would it hurt to run say, 10W40 or even 15W40 in the 2.5L for the summer time.
I know in our Cherokees with the 4.0 I6 we run Rotella T 15W40 and they seem to love it.
Any reasons to not run the Rotella in the 2.5L.
Sure would make it easier having to only keep one type of oil on hand for the Jeeps.
Our road trip exposed some other issues, but those will be addressed with an alignment and inspection of all U-Joints.
When hot I noticed a drop in oil pressure at idle .... too low for my liking.
Realizing I bought this in the dead of winter and the PO just did an oil change I figured he might not have put in the correct oil. Pressure was dropping to below 10 at idle and going up to almost 30 at 2000 RPM.
So I took her home, drained all the oil and installed a fresh filter as well as some 10W30. Went for a run and things looked much better. Hot idle was now hovering at just below 20 PSI and at 2000 RPM peaking to almost 40 PSI.
I'm happier, but not static.
Ok so she is old and probably tired ...... 1995 YJ ..... 245,000 miles ...... 2.5 L
My question is this ......
Would it hurt to run say, 10W40 or even 15W40 in the 2.5L for the summer time.
I know in our Cherokees with the 4.0 I6 we run Rotella T 15W40 and they seem to love it.
Any reasons to not run the Rotella in the 2.5L.
Sure would make it easier having to only keep one type of oil on hand for the Jeeps.
Our road trip exposed some other issues, but those will be addressed with an alignment and inspection of all U-Joints.