Quote:
Originally Posted by oldskewel
GREAT info. Thanks for posting. That had been my suspicion, but since I did not know enough, I was waiting for a more informed analysis.
Based on experience with all my cars and reading stuff like this situation online, I really think the #1 consideration when getting new spark plugs is to make sure they are not fake. Well, I guess after you make sure they thread in there. And after they do not collide with the pistons. But after that ... 
When I got my '01 3.0i at around 169k miles, I soon replaced the plugs, just because I had no record of them being replaced and was foolishly dreaming of higher MPG. There was no change at all in anything about the car after replacing with the exact specified NGKs (but not genuine BMW). The ones that came out said BMW as well as NGK on them, and I'm pretty sure they were original. The electrodes looked close to perfect, even at that mileage. |
Glad to help you also
Fake plugs just started as it was a non issue when I worked for Champion. There were a few Mexico shops buying old stock and repackaging them and then stuffing them into the market. One group even picked up old plugs, cleaned them and resold them in sets! The labor must have been cheap!
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2005 X5 4.8IS
The Blue ones are always FASTER....
Current Garage:
2005 X5 4.8is
2002 M5 TiSilver
2003 525iT
1998 528i
Former Garage Stable Highlights
2004 325XiT Sport
1973 De Tomaso Pantera, L Model
1970 Dodge Challenger T/A 4 sp Alpine White
1970 Dodge Challenger T/A 4 sp GoManGo Green
1971 Dart Sport, “Dart Light” package
1969 Road Runner 383
1968 Ply Barracuda 340S FB Sea-foam Green
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