I started to change the 2 small O-rings on the end of the oil filter cover shaft today. I had some replacement O-rings but they were all the same size because only one size is listed in Fastlane.

It looks like the shaft should have 2 different size 0-rings because the 2 diameters where the O-rings mount are different sizes. Is it correct to use the 2 same size O-rings?

BTW:617 engine, '80 300SD, 250,000 miles.

P E H

PS: It was definitely time to change the old O-rings as they came out in little chunks.