Spark plug recommendation?
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Joined: Mar 2010
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From: Land of mountains, cheese, chocolate and watches
12' W204 C63 AMG coupe "T-Rex", 12' W451 Smart Fortwo Pulse (99' W202 C43 AMG + Ultima Can-Am sold)
I use exclusively Bosch plugs in all my vehicles. For the 43 currently I use Double Platinums
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MBWorld Fanatic!
Joined: Mar 2010
Posts: 5,889
Likes: 323
From: Land of mountains, cheese, chocolate and watches
12' W204 C63 AMG coupe "T-Rex", 12' W451 Smart Fortwo Pulse (99' W202 C43 AMG + Ultima Can-Am sold)
Thread Starter
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Joined: Sep 2007
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I maybe should of initiated a tally on this one. I planned on going w/ Bosch this time around, but I do hear the Iridium provide the extra benefits Zayed mentioned. I’m a bit torn at this point.
It only took me about 30-45min to swap the plugs out last time and is very straightforward on the M104. I might just try the Bosch out first to see if there is a noticeable difference. I currently run NGKs. I plan on posting back if I notice a substantial difference between the two.
I’m currently losing a slight amount of coolant after a spirited drive and some of it is dumping in cyl# 6 which is fouling my plug. I had the car pressure tested about a year ago and there were no issues. The head gasket was changed at the dealership around 50k miles. No contamination and it cools fine. I replaced the cap not too long ago w/ a oem equivalent. Something tells me the intake manifold might be at fault or the heat hose around the back of the engine which apparently has a tendency to leak over time.
Thanks for the input!
It only took me about 30-45min to swap the plugs out last time and is very straightforward on the M104. I might just try the Bosch out first to see if there is a noticeable difference. I currently run NGKs. I plan on posting back if I notice a substantial difference between the two.I’m currently losing a slight amount of coolant after a spirited drive and some of it is dumping in cyl# 6 which is fouling my plug. I had the car pressure tested about a year ago and there were no issues. The head gasket was changed at the dealership around 50k miles. No contamination and it cools fine. I replaced the cap not too long ago w/ a oem equivalent. Something tells me the intake manifold might be at fault or the heat hose around the back of the engine which apparently has a tendency to leak over time.
Thanks for the input!
Last edited by RPB; Jun 27, 2018 at 09:03 PM.
