Stock Oil Pan Bolt Thread Size
Thread Starter
Driver
Joined: Jun 2015
Posts: 111
Likes: 1
From: MA
Stock Oil Pan Bolt Thread Size
Changed the oil last night only to find out that the last guy to touch the oil pan bolt must have stripped the aluminum threads in the oil pan.
The first give away was it took a 9/16" wrench to loosen the pan bolt, not a metric size wrench and didn't come out like I expected, it kind of dragged it's way out. When replacing the bolt it went beyond the tightened position.
The bolt diameter removed measured .465 inches diameter, not sure what that relates to, maybe a 12mm bolt. Now I need to purchase a Time-Sert kit or a Heli-Coil repair kit just not sure which one to purchase.
Anyone else have this happen to them?
Thanks for any suggestions
The first give away was it took a 9/16" wrench to loosen the pan bolt, not a metric size wrench and didn't come out like I expected, it kind of dragged it's way out. When replacing the bolt it went beyond the tightened position.
The bolt diameter removed measured .465 inches diameter, not sure what that relates to, maybe a 12mm bolt. Now I need to purchase a Time-Sert kit or a Heli-Coil repair kit just not sure which one to purchase.
Anyone else have this happen to them?
Thanks for any suggestions
Instructor
Joined: Feb 2008
Posts: 914
Likes: 70
From: CA
My car is at service now at the stealership. They are telling my my oil pan has stripped drain plug. They are the only ones that have ever touched it. Am I out of my mind to tell them to replace the oil pan at their own expense since it's their own fault?? they said it would cost $575!!!
Racer
Joined: Jan 2011
Posts: 1,761
Likes: 250
From: AZ
My car is at service now at the stealership. They are telling my my oil pan has stripped drain plug. They are the only ones that have ever touched it. Am I out of my mind to tell them to replace the oil pan at their own expense since it's their own fault?? they said it would cost $575!!!
If you have a stack of receipts showing they have been changing the oil for a long period of time, I would say you have an excellent case.
My guess is once though it's in their lap, they'll come up with a cheaper solution like using a tap and putting in a larger drain plug rather than replacing the entire pan.
Instructor
Joined: Feb 2008
Posts: 914
Likes: 70
From: CA
If you have a stack of receipts showing they have been changing the oil for a long period of time, I would say you have an excellent case.
My guess is once though it's in their lap, they'll come up with a cheaper solution like using a tap and putting in a larger drain plug rather than replacing the entire pan.
My guess is once though it's in their lap, they'll come up with a cheaper solution like using a tap and putting in a larger drain plug rather than replacing the entire pan.
CL Community Team
Joined: Sep 2009
Posts: 3,915
Likes: 227
From: Alabama
Good job not getting hosed by the dealer. If they have been changing your oil exclusively and your oil pan is stripped it is 100% their fault. The oil pan bolt on the LS430 is super easy to loosen and tighten with a socket wrench. There is absolutely no reason the pan threads would strip or wear out unless some mamaluke tech forced it.
Pole Position
Joined: Dec 2013
Posts: 277
Likes: 8
From: Minnesota
Changed the oil last night only to find out that the last guy to touch the oil pan bolt must have stripped the aluminum threads in the oil pan.
The first give away was it took a 9/16" wrench to loosen the pan bolt, not a metric size wrench and didn't come out like I expected, it kind of dragged it's way out. When replacing the bolt it went beyond the tightened position.
Thanks for any suggestions
The first give away was it took a 9/16" wrench to loosen the pan bolt, not a metric size wrench and didn't come out like I expected, it kind of dragged it's way out. When replacing the bolt it went beyond the tightened position.
Thanks for any suggestions
The head is 14mm and I believe it's an M12 bolt with a 1.25 mm pitch. I'd bet someone put in an imperial/SAE bolt and ruined the threads. However, if the bolt was aluminum, the pan might be okay.
Did you put the 9/16in bolt back in the pan or did you replace it with a proper bolt?
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