New E3 spark plugs

Ohhh you are in trouble for starting another spark plug thread. Those are for lawn mowers and weed wackers. Just kidding. Never tried them I use the NGK 5 series.
 
Junk, don't ever use them in a turbo Buick, only for a modern sbc, stay with NGK ur5, ac Delco, Autolite 23s (depending on your set up )...
 
I tried them in both my regal and my runabout a couple of years ago and didn't like them. They seemed to improve performance a little just from the way the cars felt but gas mileage dropped a lot. I took them back to O'Reilly's and got my money back without any problems.

Best way for you to know how they work in your engine is to try a set. And if they don't work out for you, you should be able to return them for a refund.
 
About once a year someone pops up with a question about the newer spark plugs. Do a search about spark plugs and you should find more than enough info on what works best in these cars. The modern ones don't.;)
 
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