A buddy of mine with 200 Opti Max was told by a certified Mercury mechanic, that you can fog an Opti Max without ever taking the plugs out. He said to, turn the key to on, but don't crank the engine, then put the gear shift lever in drive and then to neutral 3 times and this will kick on the automatic oil injection into the cylinder heads. Then turn the key over to crank a few short times to coat the cylinder walls with the oil. I know on my old 225 EFI, I used to pull the plugs and then shoot the fogging agent into the cylinder heads and that is how I did my new 250 HPDI Series 2. Does anyone know if you can use the above described procedure for an Opti Max on a HPDI - without pulling each spark plug? Just curious.