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Old 05-21-2002, 05:03 PM
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Location: Monroeville, NJ
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Which Bosch spark plug?

I've heard a lot of pro's and con's about Bosch Platinum plugs. What's the best type for a 1987 560 SL?

Thanks.
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  #2  
Old 05-21-2002, 08:38 PM
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Location: Sherman Oaks, CA
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I would suggest using the standard copper core bosch plugs for your car.

Platinum plugs may help other cars, but most have found they don't do much in a benz.

I have standard copper core plugs in my 300ce, my brother uses standard copper core plugs in his range rover instead of those +4 plugs, and his car runs much better now than it did with the +4 plugs that have the 4 arms over the electrode.

Check fastlane or partsshop. you should easily find the right standard plugs in there for your car.

Alon
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Old 05-21-2002, 09:35 PM
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Most MB engines, especially pre 1996 engines, do not do well with platnium plugs. The installation of those plugs has lead to running problems in many cars.

I would highly recommend you stay with copper plugs. You'll save money and potential headaches.
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Old 05-22-2002, 10:53 AM
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Join Date: Apr 2000
Location: Location: Berthoud, Co. USA
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Which bosch spark plugs

I just took a set of platnium +4s out of my 300E and put in the correct H9DCO plugs and the intermittant rough idle seems to be gone. I did not realize my independant mech had put in the +4s
over two years ago and have suffered with the rough idle ever since.
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