Originally Posted By: JAG
That's disgusting. Do you know what oil(s)/OCIs he used? Does OCI have a significant effect?
Have you seen any photos of RS4 intake valves that are not filthy? I wonder if any oil/OCI/gasoline type/gas additive combination can keep it reasonably clean.
I cringe at the thought that BMW 135i & 335i IV deposits could be similar to RS4 IV deposits. I need to find out.
time for borescope inspection
That's disgusting. Do you know what oil(s)/OCIs he used? Does OCI have a significant effect?
Have you seen any photos of RS4 intake valves that are not filthy? I wonder if any oil/OCI/gasoline type/gas additive combination can keep it reasonably clean.
I cringe at the thought that BMW 135i & 335i IV deposits could be similar to RS4 IV deposits. I need to find out.
time for borescope inspection