Recent content by cog

  1. C

    Super Tech 20w-50 in my 500,000 mi. Jeep 4.0.Bad?

    [/img] This is 6 months ago. Shes at 508,755 at the moment
  2. C

    Super Tech 20w-50 in my 500,000 mi. Jeep 4.0.Bad?

    Ok, im sticking with the tried and true ST 20w-50! Thanks for your insights.
  3. C

    Super Tech 20w-50 in my 500,000 mi. Jeep 4.0.Bad?

    Im in So. CA so it never gets too cold. But I bet I would get better mileage with a thinner oil. I probably have an old school way of thinking that the thicker oil lubes better and wont leak out the seals as quick I use to add Slick 50 once in a while but havnt in a 100,000 mi. Thanks for...
  4. C

    Super Tech 20w-50 in my 500,000 mi. Jeep 4.0.Bad?

    My 89 Cherokee has 508,000 miles with mostly Castrol 20w-50 used. The last few years have been the Super Tech 20w-50 at 3000 to 5000 change intervals. Do you guys think im harming the old mill and does the ST have the Zinc that my motor needs?
  5. C

    Post your latest oil change

    1989 Jeep Cherokee 4.0 435,000 mi. original engine & tranny. Castrol GTX 20w-50, Bosch oil filter, changed every 3000 mi.
Back
Top Bottom