QS UD 10w30, 2992 Miles, 95 Jeep Wrangler

[OhioYJ]

Been meaning to add the text results of the test, since images are frowned upon.

Code:

Iron		  56
Chromium	   3
Nickel		  <1
Aluminum	  10
Copper		   8
Lead		  16
Tin		  <1
Silver		  <1
Vanadium	   1
Silicon		  52 *
Sodium		  49
Potassium	   9
Molybdenum	  39
Magnesium	  17
Calcium		2018
Barium		  <1
Phosphorous	1331
Zinc		1553
Viscosity 100C	10.1
Base Number	 6.0 *

 

[buster]

Si is high. I believe the 4.0 benefits from oils that have higher ZDP levels. I would use QS Defy in this engine.

 

[84zmyfavorite]

I am on the fence about which oil to choose for my parents 2001 Cherokees 4.0 with 121,000 miles. QuakerState Defy 10w-30 or Valvoline Maxlife 10w-30?

 

[buster]

I'd use Defy.

 

[addyguy]

Originally Posted By: buster

I'd use Defy.

+1.