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Maybe, you will be one of the lucky ones that doesn't have to replace them. It was about 80% of the cam/aux shaft seals that leaked. I am going to put "Volvo" seals in my 940 because the Elring seal that is in there leaked within 1,000 miles and is leaking so bad now my car leaves oil stains everywhere it goes. A 240 I put the Elring seals in leaked the following day. I used a red Elring when I installed a B-cam in his 240 and it was fine the 30+ minutes it was running at my shop. When he got home after driving the 50 miles to his house the car was 3/4 quart low on oil and leaking like a sieve. When I went back into that engine to replace the seal with a Volvo seal from the dealer I pulled the cam bearing caps and removed the seal by sliding it off the cam snout with my fingers. It looked perfect inside of the seal. No difference from another brand new seal I had on hand. That was it. Never again. IIRC hiperfauto said he has had trouble with these same seals.I’m screwed.
Yet to leak tho.
I changed timing belt, and inspected the orange Ering cam seal, which appeared 'like new' condition. A couple months later, under moderate driving it began leaking, I assume a quality control and/or material quality issue ? I saw Volvo (dark grey) cam seal on sale and ordered.Don't even consider using Elring seals anymore. Almost every one I installed leaked within 1,000 miles or less. They were the orange/red Elring seals. I won't ever use them again. The seals that are considered "Volvo" seals work fine still. So do the Victor Reinz.