Came across a fella who shared his UOA sheet with me, thought I would post it as a comparison to get more data on the SRT-4 besides just mine. Oil was Mobil1 5w-30, used 5,000 kms, engine has 8,800 kms on it since new. This is the third oil used in the crankcase which included the factory fill that was dumped at 600 miles. This is the basic elemental analysis, no TBN, Visc, or oxid, nit., sulf numbers. We really dont care about long drains as the warranty calls for 3000 mile changes for the most part, so we are more concerned with the wear data.
Iron - 12
Chrome - 1
Moly - 65
Aluminum - 2
Copper - 4
Lead - 1
Tin - 0
Silicon - 26
Sodium - 8
Zinc - 678
Potassium - 1
Nickel -0
Silver - 0
Fuel, Water, Antifreeze - nil
I commented that silicon was on the high side. The vehicle has a cold air intake system which uses the typical K&N style cone filter. The break in silicon could be leaching from gaskets and sealers but my third oil change showed much lower silicon than this so I would assume the leaching would be almost finished. My SRT-4 UOA's (posted on this forum) averaged 7-9 ppms in similar mileage on my first three oil intervals. I had a high of 12 ppms but that was with a Redline/Mobil1 brew where Redline typically carries a higher percentage of silicon additives. The iron wear is also about twice the level of mine (although not an overly high amount), so the silicon issue may be the cause. All other numbers look good.
My advice was to clean the intake filter and check for leaks, also change to Mobil1 10w-30 as the vehicle is not driven in winter conditions.
Joey
Iron - 12
Chrome - 1
Moly - 65
Aluminum - 2
Copper - 4
Lead - 1
Tin - 0
Silicon - 26
Sodium - 8
Zinc - 678
Potassium - 1
Nickel -0
Silver - 0
Fuel, Water, Antifreeze - nil
I commented that silicon was on the high side. The vehicle has a cold air intake system which uses the typical K&N style cone filter. The break in silicon could be leaching from gaskets and sealers but my third oil change showed much lower silicon than this so I would assume the leaching would be almost finished. My SRT-4 UOA's (posted on this forum) averaged 7-9 ppms in similar mileage on my first three oil intervals. I had a high of 12 ppms but that was with a Redline/Mobil1 brew where Redline typically carries a higher percentage of silicon additives. The iron wear is also about twice the level of mine (although not an overly high amount), so the silicon issue may be the cause. All other numbers look good.
My advice was to clean the intake filter and check for leaks, also change to Mobil1 10w-30 as the vehicle is not driven in winter conditions.
Joey
