I've traced some oil seepage to my front exhaust camshaft seal. Thinking I might do them all once I'm that far in. Elrin seems to be widely available for 1/3 the price of OEM. Is this seal one of those items you should use ONLY OEM? Or is Elrin o.k.?

 

I only use OEM. If you decide to go aftermarket do not get any ORANGE ones. They will leak in no time at all.

 

Seals leaking usually means problems with crankcase ventilation. Volvo's are notorious for having breather box issues.