Here are a few previous threads on the topic of synthetic oil and leaks. Perhaps they may be of some use.Bought used motor was rebuilt 12 years ago. dont know much about build very few miles on motor, using Delo400 oil. Was thinking of using synthetic oil but was told will leak like crazy. Should I stay with Delo400?
How are you gong to drive it?Bought used motor was rebuilt 12 years ago. dont know much about build very few miles on motor, using Delo400 oil. Was thinking of using synthetic oil but was told will leak like crazy. Should I stay with Delo400?
If it has very low miles, use conventional to make sure rings are seated in. After that you should be able to use a synthetic. The reason the topic of leaks comes up is because when it is used in an engine that has miles on it and no synthetic use is the synthetic will clean deposits around the seals and gaskets causing leaks. I recently rebuilt a 390 FE Ford sealed in rings with conventional with zinc additive. Then switched to synthetic with zinc additive. No leaks. 10w30 synthetic and a flat tappet cam.Bought used motor was rebuilt 12 years ago. dont know much about build very few miles on motor, using Delo400 oil. Was thinking of using synthetic oil but was told will leak like crazy. Should I stay with Delo400?
It is impossible to answer this question without understanding the internals and intended use. If you suspect it is a mild flat tappet cam with stock springs, I would run that Castrol Hot Rod oil. HDEO used to be the ticket, but no longer because there are better options today. If the engine has higher spring pressure, you might need to play chemist and add ZDDP.Bought used motor was rebuilt 12 years ago. dont know much about build very few miles on motor, using Delo400 oil. Was thinking of using synthetic oil but was told will leak like crazy. Should I stay with Delo400?
I have 6 qts on the shelf. Good stuff.How about Castrol gtx classic 20w50? Can easily pick it up at Walmart too!
What do you use it in brotha?I have 6 qts on the shelf. Good stuff.