Exactly. I have changed oil countless times in several dozen vehicles and never observed seepage from a drain plug. I just reused whatever drain plug and its washer that came from the factory. Never a second thought. That comment about increasing parts dept. sales is right on! Out of curiosity, I checked cost of drain plug washer at my local dealer about 2 years ago and they wanted $5.00 for one! Absolutely insane.
Originally Posted by CR94
Because they hadn't yet thought of that trivial gimmick to increase parts-department sales? Or because careless people mangle plugs and washers, causing leaks? My OE plug washer, which Toyota claims must be replaced every time, actually works fine for multiple uses (up to 7 oil changes, so far) with no leaks. I don't abuse it.
Originally Posted by Triple_Se7en
. All my vehicles during the 60s, 70s, 80s, 90s and 00s never required a gasket or washer. Has modern technology surrounding the oil pan bolts gone suddenly backwards? ... Why didn't I need a washer for 50 years and now I do?