Originally Posted By: addyguy
With 0's for lead across the board, one can infer this engine uses aluminum bearings.
With that in mind, I don't like the Al values at all for ANY of these reports - we 'usually' see single-digit Al, even with 10-15k intervals.
I'd say you are doing some bearing and/or piston damage, and would use a thicker oil to 'cushion' this hard-worked engine more.
...of course, you've made it to 180+k on this plan, so feel free to keep doing what is working! ;P
Considering the universal averages are for around 6,400 miles if I remember correctly, and none of the reports are more than a few ppm above those averages at significantly more miles (except for that sample using the Pennzoil Ultra...not using that again) I'd think it is wearing pretty decently, no? I would think BLackstone would have flagged something by now. Keep in mind the engine sees a WOT pull to the redline every time it is warm, and typically sees many miles cruising around 100mph in the Texas heat on the toll road. Still runs perfectly smooth and doesn't consume any detectable amount of oil. Once it starts to, I'll switch to a higher mileage oil (I see M1 has an EP version with HM).
With 0's for lead across the board, one can infer this engine uses aluminum bearings.
With that in mind, I don't like the Al values at all for ANY of these reports - we 'usually' see single-digit Al, even with 10-15k intervals.
I'd say you are doing some bearing and/or piston damage, and would use a thicker oil to 'cushion' this hard-worked engine more.
...of course, you've made it to 180+k on this plan, so feel free to keep doing what is working! ;P
Considering the universal averages are for around 6,400 miles if I remember correctly, and none of the reports are more than a few ppm above those averages at significantly more miles (except for that sample using the Pennzoil Ultra...not using that again) I'd think it is wearing pretty decently, no? I would think BLackstone would have flagged something by now. Keep in mind the engine sees a WOT pull to the redline every time it is warm, and typically sees many miles cruising around 100mph in the Texas heat on the toll road. Still runs perfectly smooth and doesn't consume any detectable amount of oil. Once it starts to, I'll switch to a higher mileage oil (I see M1 has an EP version with HM).
