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In this question, we discuss stripped oil pan threads.

I learned it is a result of user error - over tightening and cross threading, by the dealership I consistently go to. Many people have come across this and demand new oil pans.

I called the dealership and they agreed to "fix it" NO charge. (Obviously they know they made an error.)

The solution: install an over sized oil drain plug.

I said OK and left.

Did I just get "screwed" or is this a legitimate fix?

Any help is appreciated.

Community
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Greg McNulty
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4 Answers4

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I would be satisfied with the repair. I would push for some free service, maybe a couple of free oil changes. Demand a refund for the service you paid for when the damage was discovered I would also demand a letter accepting blame and a promise to replace the oil pan for free if you find the repair unacceptable at a later date due to stripped threads or leaks.

mikes
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UPDATE & ANSWER

After some research, I discovered that any future engine work will not be guaranteed when an over sized plug is installed - compared to having the factory supplied plug correctly installed. (Some dealerships won't even service vehicle engines with over sized plugs.)

In addition, it is much easier for these threads to fail between oil changes, as they were just jammed in.

This can cause serious engine damage.

(Also note, that when the stripped threads were originally found, replacing the oil pan was the only highly recommended solution. So if you find yourself in this situation, do not settle for anything else, as this is what they recommend themselves.)

After pointing all this out and that it might cost them a blown engine if it fails, they happily replaced the oil pan no charge.

Greg McNulty
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you have to consider that the sump is under slight pressure. Ever heard of oil pressure? Hot liquids expand to, this is why there is a recommendation with each vehicle to only put so much oil in the engine as it can blow out the oil seals, if it can blow out an oil seal there is a possibility it can blow out an oil plug if it is not fitted properly i.e. just jammed in placed, or if it is overfilled by slightly to much oil. I would demand a new sump be fitted with a new standard sized drain plug.

Fred Fanackerpan
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If properly installed, an oversize oil plug is a viable 'repair' and much easier than pulling an engine just to replace an oil pan with a new one. If the plug seals, it will last for many years. Sometimes these will weep or drip if not done correctly, so watch for that issue.

380Lover
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