https://bangshift.com/bangshift1320/engine-oil-and-low-speed-pre-ignition-in-direct-injection-engines/
Interesting stuff. Conclusion is that DI engines should use specific oil that has less calcium or sodium detergent.
I have been hearing about LSPI for years.... glad they finally found a fix. That Driven DI oil is expensive AF though, especially since I change my oil ~4x/yr. Will see if mainstream companies come out with something
I just don't load it up at low speeds. Let it rev. Or not, since it's in a shipping container.
Having transmission programming that tends towards fuel efficiency will often cause the engine to drag/lug a bit. I've noticed this on my car, but not to the point of any indication of pre-ignition. Perhaps some manufactures haven't quite figured out the mapping yet.
One key to eliminating this to is minimise the distance between the top compression ring and the top of the piston.
Quote from: shp4man on January 30, 2019, 01:15:59 PM
One key to eliminating this to is minimise the distance between the top compression ring and the top of the piston.
I can do that by adding carbon deposits to the piston top. I mean, the opposite of that. Water injection.