Average Reviews:
(More customer reviews)I purchased these plugs to use in my 98 Saturn SL2. The first thing to do is inspect the plugs before installing them. The finished product isn't the best. The threads on one of the plugs had some burrs on it that concerned me to the point where I decided to dress it with a file first before installing it. If not, it could've cross threaded the head which would have been disastrous!!!
The plugs come already gapped and aren't adjustable. There were some variances in the gaps. Since the variations were so slight, I felt it would not be an issue and decided to install them as is.
I debated on whether or not to use anti seize and eventually decided against it. The website for the spark plug doesn't really recommend it. It says that the threads are nickel plated which help to resist seizing and galling. Even though the plugs are warrantied for 5 yrs./100k miles, I don't plan on leaving them in there that long.
If you do plan on leaving the plugs in for a long time, anti seize would probably be a good idea. Don't forget to adjust the torque values if you decide to use anti seize.
I just installed the plugs yesterday. The car seems to start up faster and has more pep when you hit the throttle. The old plugs that were removed were relatively new (5,000 miles on them) and in good condition so I don't think the improvements were a matter of worn plugs being replaced with new plugs. Even so, those things are hard to measure and open to the power of suggestion. The real test will be the miles per gallon, which I will be evaluating and reporting on after driving for approx. one month.
Stay tuned!!!
Update: It's one month and 1,200 miles later and the numbers are in.
First, some driving impressions. The car does run smoother and has more power. The car maintains 65 mph on the freeway with less effort than it used to take. Before, I could feel the engine "working" to maintain 65 mph. Now it cruises at 65 and I need to keep an eye on the speedometer.
Now the good stuff. My SL2 averaged 25.75 mpg versus 23.02 mpg for the month prior to installing the E3 spark plugs. I have to admit that because of the increased performance, my foot has been heavier on the gas pedal than normal so the mileage could possibly have been even a little better. All in all, I would say these spark plugs are a worth while purchase that will eventually pay for themselves.
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