NGK SPark Plugs are good but not good for MB cars. Mercedes Benz specially designed their spark plugs to use in MB engines. Bosch manufactured MB spark plugs and they sell it also as Bosch. MB uses a platinum tip for maximum performance and durability.
That's not quite right. - on a 4 cyl or kompressor the OEM is the multi tipped Bosch
Platinums mainly give extended life for V6 where plug changes are more difficult.
Have a read of this:
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Platinum vs. Copper NGK spark plugs
by Dan Thompson
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For lots more info on NGK spark plugs, check out NGKs FAQs.
> I have heard that platinum plugs aren't very good for performance...how is this so?
All things being equal, a more powerful spark will create higher cylinder pressure which will create more power. The power of a spark is determined by its voltage (more voltage = more powerful spark).
Aside from variables such as cylinder pressure and A/F ratio, the amount of voltage required to jump across the gap of a given type of spark plug is determined by the plug gap. A smaller plug gap requires less voltage to jump across the gap and a larger plug gap requires more voltage to jump across the gap.
There is a way to reduce the amount of voltage required to jump across the gap of a plug. By increasing the number of sharp edges that the spark can jump from and to (as in SplitFire and Torquemaster plugs) or by using an electrode material that is a more efficient conductor than the standard steel material (like platinum) you can decrease the amount of voltage required to "jump the gap". The only problem is that these "specialty" plugs will produce a less powerful spark than a standard plug will at the same gap. This means that, as long as your ignition system can provide enough voltage to jump the gap on the spark plug all of the time, with these "specialty" plugs installed in your car your engine will produce less power than it will with standard spark plugs. The only way you can regain the power lost with these "specialty" plugs is to open their gap out farther (a wider gap requires more voltage to jump the gap).
I've seen a number of cases where people have installed SplitFire, Torquemaster or platinum plugs in their car in the place of standard spark plugs and have complained of reduced power. In all of these cases the specialty plugs were installed using the plug gap specified for the car's original standard plugs (with the exception of the Torquemaster, whose gap is not adjustable). The reduced spark power due to the reduced voltage requirement of these plugs was the culprit.
Nissan DID address this problem by specifying a larger plug gap when using platinum plugs (0.039" to 0.044") instead of standard plugs (0.032" to 0.035"). In this case, the platinums will produce roughly the same spark energy as the standard plugs while providing an extended service interval (50K to 60K miles for platinums versus 20K to 30K miles for standards).
NGK SPark Plugs are good but not good for MB cars. Mercedes Benz specially designed their spark plugs to use in MB engines. Bosch manufactured MB spark plugs and they sell it also as Bosch. MB uses a platinum tip for maximum performance and durability.
I haven't had any problems of power loss, misfiring, or overheating issues yet. actually all 3 areas have been improved with the NGK's. I don't have a problem switching them out for Bosch, but it's running so strong and reliable, I'm almost wanting to wait until after 4-5 thousand miles before I go back in.
Nothing wrong with NGKs Benzrider,as long as they are the correct type and heat range. -- Been using them for years
Actually their bog standard single pin plug has a couple of innovative features not seen on other plugs. (incised centre pin and profiled side pin for easier spark release)
Where does all this dis-information originate? - Is it a "made in the Black Forest by little elves" thing?
Nothing wrong with NGKs Benzrider,as long as they are the correct type and heat range. -- Been using them for years
Actually their bog standard single pin plug has a couple of innovative features not seen on other plugs. (incised centre pin and profiled side pin for easier spark release)
yeah, I have those...the pin in the middle has a "V" cut into it. I thought it was defective until I looked at the others... ....and the temp it slighty above 80. before, the boschs was half way between 80-100. so I'm pleased with the NGK's, but I'll try the boschs next time out.
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