I removed my exhaust system today.
The O2 sensors are very black and sooty - sort of even, velvety black.
Should I clean them before refitting them, and if so how/with what?
Two asides here:
1. The exhaust valves are both a lovely light, greyish, fawny colour - running perfectly.
2. That purple polish stuff, which someone here suggested, does make discoloured SS exhaust pipes shiny silver again, but it sure did take some gruntin' and groanin'! Each header pipe took an hour+.
Many thanks
The O2 sensors are very black and sooty - sort of even, velvety black.
Should I clean them before refitting them, and if so how/with what?
Two asides here:
1. The exhaust valves are both a lovely light, greyish, fawny colour - running perfectly.
2. That purple polish stuff, which someone here suggested, does make discoloured SS exhaust pipes shiny silver again, but it sure did take some gruntin' and groanin'! Each header pipe took an hour+.
Many thanks