MTFCA Forum

I am replacing my oil drain plug shown in the photo. I have three different types of washers. What is the best type, brass-fiber-crushable copper?

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Sad thing is, they all seem to "weep".

Not all weep.

https://www.pegasusautoracing.com/produ ... oduct=3245

install and never have that problem again

The plug gasket surface on old pans may be scratched, galled, or pitted. Most of them have had a lot of use and a lot of abuse and a lot of grit ground into them. A fiber washer might seal better on a worn pan surface, but they can squeeze out if overtightened. I believe a new copper washer with fiber fill to be the best choice. A custom plug with an O-ring groove would probably seal tight on most pans. Well-used plug gaskets, no matter what material they're made of, that are flattened and imbedded with grit can be expected to seep oil.

Scott_Conger wrote: ↑

Sat Jul 30, 2022 8:10 pm

Not all weep.

https://www.pegasusautoracing.com/produ ... oduct=3245

install and never have that problem again

Scott's link didn't cut-n-paste properly here it is nice seal washer!
https://www.pegasusautoracing.com/produ ... oduct=3245

Scott_Conger wrote: ↑

Sat Jul 30, 2022 8:10 pm

Not all weep!
Pegasus #3245-3/4”
install and never have that problem again

So True!

Just used one on my most problem child! Ran today over 20 miles, in the garage now, still shiny around the plug, not a whisper of oil film!

Am a sold customer, it’s an annealed alum washer bonded with neoprene oil resistant center, squished tight and true. Did add a smear of Permatex #2 to the plug threads, but always do that. With any of these other washers and gaskets you will get seeps….none with Pegasus!

Stat-o-seal is very good. I use the copper clad one & replace it every time. If you find that your plug is leaking, take a foot of Teflon tape, spin it between your fingers into a thin string. Take the plug loose until you have a 1/16th gap ( oil will start to leak out.) wrap it in the direction the plug turns cross the ends over & tighten the plug. You now have a Teflon seal. This also works on carb bowl nuts. Its a old refinery trick. I have used it for years. When a plug gasket fails to seal.
Craig.

I will add that Stat-o-Seals work wonderfully for the lower inspection plate and transmission inspection plates.

Additionally, I have modified the OD of one and installed it on the clutch adjustment screw lock nut with great success...so nice to have a T that doesn't drip.

I just ordered a Stat-o-Seal. Now I have four different types of washers!!!!!!!!

I prefer the hollow copper crush ring. Like the intake and exhaust manifold rings, when tightened, it crushes and fills in any imperfections in the surfaces such as dents and other faults on the surface around the drain hole and plug, however, it can only be used once so you will need a supply of them for oil changes. Jim Patrick

Ooh! Bonded washers! Very nice!

I like solid copper the best, but don't have any now. I bought a brass one recently, and it seems to be doing fine, but is not as soft as I like.

Thanks Scott! Gonna give them a try.

I learned from ISU that you should always use Ultra Black if you do not want an oil leaks!

Scott do you have a pn and source for stat o seal for the inspection door bolts? Mine leak something awful. Thanks so much.

Mark, go here: https://www.pegasusautoracing.com/produ ... oduct=3245

scroll down the page and the order form will show up. Choose the screw diameter you want to fit and the quantity you want...hope this helps

Got two stat-o-seals. I have more seals than I will ever use, but I was curious about what is available!