Spark plug BRISK or OEM Subaru
Subaru forester. Mine is a 15. Comfortable, decent gas mileage, able to seat 4 with stuff in back. Kayaks fit on roof. AWD helps in rain and snow. Easy to do basic maintenance, but spark plugs SUCK.
You get a better performance if you install a booster plug, DNA air filter and Brisk spark plugs. Great torque from 2000 rpm as a result.
I use a Brisk n17yc.
Get a Brisk spark plug. Worked for me
Been using the cheaper Brisk brand and never had an issue for 20k miles.
Heat Exchanger, also Brisk racing spark plugs I gapped mine to 0.026”.
Brisk are fine. You have to check them about every 5,000 miles. And change out sooner than other brands.
What plugs you're using may help. In my experience not all plugs are created equal. Brisk, for example, last maybe 5-10k miles before they're garbage. Whereas I can run NGKs for 15k+.
Brisk silver er10s if you need 2 steps colder. I had the ngk plugs, but they wore down just as fast and are more expensive. Brisk silver are like 10 bucks
Good luck doing spark plugs
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