One Acre Farm
Member
I have a new to me case ih c50 that has only had regular oil. I would like to put synthetic oil but was once told that once a motor gets broken in with one type of oil, you shouldn't switch. Is there any truth in that?
Sounds more like an old husband's tale to me.
My wife does not talk about motor oil but I do.
. Maybe coincidence... I dunno.
I dont know about the detergent issues but I have heard that motors that have run extensively (broken in) on regular oil and switched to synthetic may start using oil due to seepage by the rings due to synthetics different molecular build. My dss 306 race motor from a mustang was broken in with regular 10w30 and was fine. When we switched to synthetic it started using a 1/2 a qt or more every oil change, went away when we switched back to reg 10w30... Maybe coincidence... I dunno.