It looks like the front main seal on my 580ck is leaking pretty bad. Has anyone had luck with BlueDevil Oil Stop Leak? I'm wondering if I should give that a go before I tear into it and replace the seal: https://gobdp.com/product/oil-stop-leak-49499/
I’ve used it on things with excellent results!
Welp it seems to have stopped leaking completely after putting in some BlueDevil Rear Main Leak Stop and running it for an hour. We'll see if it lasts!
The seal is probably only 50 years old, you should get another FEW HOURS out of it.
Best go ahead and get a seal coming in so you have less downtime replacing it.
You probably should gt a wear sleeve for crank pulley