I'm doing my first oil change on my 2001 C70. I can't loosen the drain plug bolt; I'm starting to strip the head. By chance is this bolt a reverse thread? I'm using a 17mm wrench and socket which seem to be the correct size, but it won't budge. It almost seems like the shop that did the first oil change right after I bought the car put the bolt in with an air gun.

Thanks for the help!
Mike

A good reason to stay away from oil change shops. I prefer to change oil myself; I never have any trouble removing the oil plug and filter, and I never have leaks.

As Klaus mentioned. use a 6 point socket. The drain plug in aluminum engines always is hard to remove. Honda 450s were terrible, you needed a ratchet, a six point socket, ans a LONG box wrench to aid in pulling the ratchet.

ALWAYS use a new aluminum washer each time you put the plug back and be sure to use a torque wrench to assure that the plug is tight enough, but not too tight.

The plug is probably tight because the last guy did not use a new washer and had to tighten the old washer too much.
--
'96 855R,'64 PV544 driver, '67 P1800 basket case, '95 855, '95 854, the first three are mine, heh, heh, 435,000 miles put on 9 bricks

Lefty is loosey. So, the handle of the wrench needs to go from the driver's side of the car, DOWN toward the passenger side.
If you have a 17mm ratchet with 6 sides, that is better than a box wrench. You may be able to bang on the ratchet handle while it is hanging straight down. Be careful :)

Klaus
--
The 164 has a new home, all I am left with are 2 turbos :)