My 2011 Audi A3 has just 120,000 miles on it. When I purchased the vehicle 3.5 years ago, it had just over 19,000 miles. i drive about 30,000 (90% highway) miles a year to and from work.
I change the Castrol Professional SLX LLO3 oil and Mann filter routinely at 10,000 miles. I also have the oil professional analyzed.
See the last 2 yrs results:
http://imgur.com/mFY0Vw9
"Aluminum and potassium are high again. We're honestly not sure what's causing this. As you know, potassium can show coolant, but we're not sure that's the source here since sodium is very low and the other metals are in fine shape. We do sometimes see these elements from the emissions system or the intercooler, but that's normally in newer engines. It's possible these increases show a problem since they did increase on a per mile basis compared to last time, but it's hard to say that for sure. No fuel dilution this time. Run 6,000 miles and check back."
Potassium and aluminum have doubled in the last 10 months the Aluminum was 42 and 40 (one year ago it was 21) and Potassium was 44 and 45. One year ago, that was 24.
This
last sample was taken, last month, by the dealer when they changed the timing belt and water pump at 119,500 miles with about 6600 miles on the oil.
Any thoughts? Could this be wear from the HPFP?
regards,
rbcsaver