Hi , My Forrester is close to 8yrs since manufactured with 88k. Daily driver in the city with high traffic. It started to jerk around 60k, the dealer changed the spark plugs and problem was solved them. It recently started to jerk again. I replaced again the sparks and noticed oil leaks ate every spark tube. I contacted my mechanic, he will handle the replacement of the oil seal but recommended me replace the coils. He is asking me $75 per coil, I know the originals cost more than that. I believe he quoted replacement coils. Does anyone knows if there is a good aftermarket coils that works well for my car?