Originally Posted By: Brolly
But isn’t there a connection between LSPI and fuel dilution? Maybe we should look deeper why are the 1.5T having a fuel dilution problem. Spraying extra fuel to keep it cooler and to lessen the LSPI and therefore causing oil issues or am I misunderstanding? Just a question. My guess will be this 2.0T will have fuel dilution how much is unknown. But I want to prepare for it from the start. I haven’t heard any of the Civic Type R’s having fuel dilution so maybe the Accords 2.0T won’t.
Are you saying the Honda engine would sense LSPI (piezo thingie), and then control to rich to counter? I didn't think engine control strategies did that since it can't reliably guarantee destructive & sudden pre-ignition won't just take out the valves+pistons before control can be applied. LSPI happens that fast.
If that's the case, and Honda does go rich at the first sign of knock, then I see how there could be a connection to the Mobil11 low-Ca, which inhibits LSPI, and the Honda control strategy which goes rich with other high-Ca oils that allow more LSPI.
M1 AFE 0w30 still my choice here. I like the 0w at least matching Honda's 0w recommendation, and the slight edge on visc & oil film thickness with the "30" part when or if fuel dilution rears its ugly head. Also, M1 AFE 0w30 is all dexos1 Gen2 anti-LSPI, timing chain tests, GMOD, etc., good to go.