MMO + TC-W3

[Vikas]

I know you are kidding about bulb dieing but the light is always turned on when you turn on the ignition

 

[demarpaint]

I never got a CEL from adding anything the fuel, and I've used massive doses of MMO at times. I do know that TCW3 can and will foul plugs and that would trigger a CEL, but I've never used a dose of TCW3 that strong.