I used to run Bosch Plat plugs in my Camaro 350, and while they did not make any noticeable difference when driving, they did last a LOT longer than standard plugs, and I think they were like $4.50 each. That engine burnt a decent amount of oil, enough that regular plugs would foul in about 2 months. With the Bosch Plat I could go a year without fouling.
-Coach
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