I pulled my flywheel because I thought my rear main was leaking a little. The rear main seal looks fine but the o-ring in the flywheel looks bad will this cause a 4” round oil puddle after one week of sitting?

I would think so. 4" round circle of oil is probably less than an ounce. Did you check to see if its coming from the trans?

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Water cooled Dry Sumped Subaru Powered Turbo Charged Fuel Injected 2500CC Tank. Oh Rah! He who dies with the most Toys not only wins, He also wears them out!

Yeah, it doesn’t smell like gear oil. The pressure plate feels like it has a light film of oil on it also.

I had a cam seal leak like that on my old motor.

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"YOU CAN MAKE THINGS HAPPEN, WATCH THINGS HAPPEN OR WONDER WHAT THE F$$K HAPPEND...WE'RE MAKING THINGS HAPPEN" The strong words of Captain Phil! Rest in peice!

There was so much oil on the back of the block it is hard to tell where it is coming from. I check the cam plug and it feels tight and looks sealed. I’m pretty sure it’s the flywheel o-ring because the old one is flat and cracked.

Thanks for the info guys.
Brad

Flywheel O Rings rarely leak. It is most likely the cam plug if you don't think it's the main seal.

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Buy the best and cry once.

ALSO CHECK THE ALIGN BORE IN THE ENGINE I HAVE HAD QUITE A FEW ENGINES IN THE 30+YRS OF BUILDING THE VW ENGINE GET THE PISTON ON TDC AND LIFT UP AND DOWN ON FLYWHEEL IF ITS THE ALIGN BORE YOU WILL HAVE PLAY THIS WILL LET THE OIL BYPASS THE REAR SEAL.AND THE VW AIR COOLED IS KNOWN FOR THIS PROBLEM.

Zonk thanks for joining we love expert builders around here. But please DONT YELL AT ALL OF US ALL THE TIME WE JUST WANT TO BE FRIENDS. Hahaha just busting ya on the ALL CAPS.

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2332cc Air Cooled Screaming Meanie. Predator Singleseat.

"Lets go get stupid"

Thanks, I just got a dial indicator and will check as soon as I get the flywheel on.