Time to change plugs. I did a search in this forum and the consensus seems to be to stick with the Bosch Super Plug. My manual calls for "F9 DCO". I tried to find those, but everybody so far refers me to either the "2" or the "+4" plugs. Even the Bosch USA web site does not list the Super. Do I go to the 2 electrode Bosch plugs or the single electrode variety made by a different manufacturer (Champion, NGK, etc.)?
Any leads out there for the Bosch Super plugs and if not , which of the alternatives are recommended??

Thanks for your responses!!

Wolfgang

THE F9DCO ARE NOW THE F8DC4'S.

As you probably realize, this is one of those 'controversial' subjects on this board.
I have had excellent results with Bosch +4s on a wide variety of vehicles.
As a bonus, they do not need to be gapped, nor do they lose their gap over time.
They also seem to stay cleaner than standard plugs, even on known 'oil burners'.

__________________
1986 300E 5-Speed 240k mi.

WRM,
Thanks for the update. Still can't find anybody that sells the Super plugs... Any leads?



csnow,
Would you prefer them over Super plugs?

call phil at the fastlane/partsshop on this site. I am sure he can help you source them.

Alon

__________________
'92 300CE - Sold
2004 C240 - 744 - C7 Wheels - Android Radio
2002 C320 - 816 - Sport Wagon

where are you located. maybe there's a parts wherehouse that I deal with that know's.

The Bosch Super plugs are available also at MBZ dealerships

__________________
"If God had meant for us to walk, why did he give us feet that fit car pedals?" Sir Sterling Moss

Michael
2014 E63S Estate
2006 SLK55
1995 E500
1986 Porsche 944 turbo

WRM,
I am located in Yorba Linda, CA. I checked the usual suspects: PepBoys, Autozone, etc.

I appreciate everybody's replies!

Wolfgang