bcmaxx
NAXJA Forum User
- Location
- The West Kootenays,B.C. Canada
My 92 xj, 4.0 daily driver has developed a warm engine knock. It wasnt really noticeable until I did an oil change on it. It has an ancient looking purolator filter on it when I did the change. I used a wix napa gold filter and shop bulk 5w30 esso oil. I noticed the knock almost immediately, I added some Lucas treatment to see if It would help, It did not. I swapped in some penzoil 10w40 and a filter, still there. I run rotella 15w40 in my offroad xj but it may be too thick for our cold temps. Why would it know when warm and not when it is cold? Just a jeep thing and don't worry about it?