well, heres the thing. my honda manual says that our SOHC engines in the 3gee and the preludes are sensative to an oil change. i changed my oil last saturday cuz i had gone over what i should have on my last oil change. i put in some valvoline max life and almost the whole bottle of lucas. and i changed my plugs. they were supposed to last for a good while, but they shitted out on me i guess. they were bosch platinum single tips. i should have taken my uncles advise when he said they will foul out on this engine. they didnt have oil or much carbon, but the electrode looked old. i put some NGKs in. noticed a bit more punch at normal rpms. and a nice bit of power increase on the freeway. the tranny doesnt have to shift to 3rd anymore going up steep overpasses or hills. now it will accelerate in 4th more easily. so no more putting off changing oil again. and i guess that would be considered preventive maintanence, which would be good on this 17 year old engine. there is more work that needs to be done, but its gonna cost money to get it running more like new. its doing good on gas, so thats good.
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