DI specific oil?
#11
RJ - you missed the key point - it is the "FREQUENCY of the oil changes" that determine the outcome. That FREQUENCY is way below the ability of the human ear to detect - it is kinda sub-sonic? But then again, I might be off my meds.
#12
Pre ignition causes engine ping, that rattle or marbles people hear when it happens. The sound of the pinging/rattle is caused by a very rapid expansion of fuel mixture in the cylinder that is not a controlled burn. Your hearing a shock wave that is going 770 mph inside a 3"(?) bore of the cylinder bouncing back and forth. Sorry if I might have misled you.
#14
Sound can't be a sonic boom because sound travels at a given speed (around 750mph). A sonic boom is created by a shock wave that exceeds that given sound speed.
Fwiw. This thread sure has drifted away from the original OP question.
Fwiw. This thread sure has drifted away from the original OP question.
#15
Read abnormal combustion:
https://en.wikipedia.org/wiki/Engine_knocking
This was discussed and proven when I was taking the automotive technology course at SUNY Farmingdale, NY.
https://en.wikipedia.org/wiki/Engine_knocking
This was discussed and proven when I was taking the automotive technology course at SUNY Farmingdale, NY.
#19
Read abnormal combustion:
https://en.wikipedia.org/wiki/Engine_knocking
This was discussed and proven when I was taking the automotive technology course at SUNY Farmingdale, NY.
https://en.wikipedia.org/wiki/Engine_knocking
This was discussed and proven when I was taking the automotive technology course at SUNY Farmingdale, NY.