Oil pan drain plug
Thread Starter
Member
Joined: Nov 2014
Posts: 167
Likes: 22
2003 CLK500, 2008 e350
Oil pan drain plug
Does anyone have any ideas how to remove the rear drain plug that has a rounded head? I just purchased the car and decided to change the oil/filter. Got under the car and found the rear plug head was rounded. I have a gator grip socket that bit really well but still couldn’t get the plug loose. Even had a breaker bar on the socket and still no luck. I thought about trying to chisel the plug but it’ll awfully soft aluminum. Has anyone had this problem and, if you have, how did you get the plug loose?
Last edited by rwolak; Apr 10, 2021 at 06:50 PM.
Member
Joined: Jun 2018
Posts: 249
Likes: 44
From: San Antonio, TX
2005 C55 AMG
The rear plug seems to be a perpetual PITA for me. First time, I used a breaker bar and broke my finger by crushing it when it finally broke loose. I nearly did it again last time. I don't know why it's always so tight yet the front is no problem.
Different metals expand at different rates/amounts. I had a Porsche 944 that wouldn't release the oil filter unless the motor was completely cold.
Maybe a pipe wrench with a cold engine? I've used one before on broken bolts that still had enough length to grab.
Different metals expand at different rates/amounts. I had a Porsche 944 that wouldn't release the oil filter unless the motor was completely cold.
Maybe a pipe wrench with a cold engine? I've used one before on broken bolts that still had enough length to grab.
Last edited by Spooky55; Apr 11, 2021 at 04:36 AM.
Thread Starter
Member
Joined: Nov 2014
Posts: 167
Likes: 22
2003 CLK500, 2008 e350
The rear plug seems to be a perpetual PITA for me. First time, I used a breaker bar and broke my finger by crushing it when it finally broke loose. I nearly did it again last time. I don't know why it's always so tight yet the front is no problem.
Different metals expand at different rates/amounts. I had a Porsche 944 that wouldn't release the oil filter unless the motor was completely cold.
Maybe a pipe wrench with a cold engine? I've used one before on broken bolts that still had enough length to grab.
Different metals expand at different rates/amounts. I had a Porsche 944 that wouldn't release the oil filter unless the motor was completely cold.
Maybe a pipe wrench with a cold engine? I've used one before on broken bolts that still had enough length to grab.
Thread Starter
Member
Joined: Nov 2014
Posts: 167
Likes: 22
2003 CLK500, 2008 e350
