I'm kind of confused what you meant here, you didn't use a copper washer and a nylon washer at the same time, did you? I'm also of the camp that you should have just put some Teflon tape on the threads (although I do agree your NEW pans shouldn't have leaked twice). The stock washer seal has never been all that good of a solution to me, I've seen and owned many stockers that leaked as well. The straight cut threads will not seal on their own, but Teflon tapeing them "should" have prevented the oil from ever reaching the bolt head to pan sealing surface, solving the problem. I have a Moroso pan on my Corvette (the 7 qt. low profile one Summit sell's as a kit: http://store.summitracing.com/partde...5&autoview=sku ) and it also seaped a little so I taped it. Problem solved. Hope your Milodon performs up to your expectations.

Ps: Speedway's website is a little thin (or maybe just hard to use), order the street rod and Circle Track catalogs (their free) and you'll have better luck!

 

No. I thought that someone might read my sentence that way. Sorry, I am not very good with words.

I guess I could have, but I don't want a subpar oil pan. My stock oil pan that is 40+ years old leaks slower than either Moroso pan I had and I don't ever use teflon tape on it.

 

I understand your feelings exactly, but having worked in the high performace and Corvette Restoration Field for 30+ years, I gotta say that MOST aftermarket stuff doesn't fit or work the way it's supposed too! It's just a fact of life. I've lost count of the number of manufactures whose brand new parts required modifications to install! Sometimes just minor fitting (No big deal), but sometimes MAJOR redesigning! As far as oil pans go, like I said before, I think the washers are an imperfect solution to the problem, Teflon washers are the worse (almost no ability to make up for uneven surfaces), solid copper washes are second best (softer, but still limited in how much crush they'll allow), and the hollow, tube shaped coper washers are the best (Mercedes use this style in some of their applications)!

 

I will keep everyone posted about the Milodon pan. I hope to get them sometime next week.

 

GM dealers sell a drain plug washer with a molded O-ring.

Works PERFECTLY.

About $1.60

 

Note the age of the thread before you post a reply. Just a hint not being critical.

 

FWIW, I did get the Milodon pan and it didn't leak. I have had it on the engine for some time and there hasn't been one drop yet.