kak
Go Kart Newbie
- Location
- Morgantown, WV
- Car(s)
- 2019 R 6MT
There is absolutely no sustained evidence of either of these claims other than anecdotes. Catch cans won’t prevent carbon buildup, and 0w20 won’t either.The oil volatility (NOAK) certainly can have do with carbon build up...this is really the only way the valves get gunked up in a DI engine...through the PCV system and is the reason for catch cans.
Check out ALL direct inject engines across the board. Unless they have MPI cycles (like the third gen Tacoma, for example), the carbon will build.