I've heard $10 a pop. Check only. Cleaning needs special tools, and more time, = mo money. Will find out Monday, as I have five that I'm gonna see if I have a problem with. Tried to do a compression check today, failed, thinking my tester has difficulties, seriously dissapointed. Removed rack as a whole. Used 1/2 inch drive on the 1 1/16 socket, and cheater bar, pretty easy really. Anyway, down to one Benz, and that one may have a slow tire leak.

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83 SD

84 CD