bigger than 1/2" smaller than 3/4"

[dreamsOfSkylines]

I managed to get off the differential drain and fill plugs (the square femalie ones) with the 1/2" but it was pretty loose in their. The drain plug on the transmission is jammed pretty good and the 1/2" is starting to leave grooves. The 3/4" is obviously way to big. What the hell are you supposed to use? I drove to a nissan mechanic to ask today and he said he just used a 1/2" breaker bar, which is exactly what I'm using. I think i may have to use an impact gun and don't want to stip the bolt. Why did nissan use these confounded contraptions? has anyone here found a replacement, as in a regular bolt.

[groundhogday1976]

Get a set of metric wrenches and sockets. Unless I'm mistaken, every hex bolt on our cars is metric.

[dreamsOfSkylines]

its not hex, its square, i think hex will strip it worse than the 1/2" drive (the ratchet square thing with no adapter on it). I've never seen metric sized rachet heads, maybe in japan....

[240Kuminachu]

Yea , its metric. everything on this car is metric. you could tear the whole thing apart with a 10 and 12mm

well almost.

[DC2 GSR]

Everything is metric....... except these plugs and your spark plugs. You need to use a 1/2" drive ratchet to take out the plugs (there are no metric drives). If it's loose, it's been damaged.... but because it's square, it's pretty hard to round it out...... get a longer johnson bar or an impact gun.

Hope that helps