rgano
Guru
- Joined
- Oct 8, 2007
- Messages
- 4,995
- Location
- USA
- Vessel Name
- FROLIC
- Vessel Make
- Mainship 30 Pilot II since 2015. GB-42 1986-2015. Former Unlimited Tonnage Master
I see any number of transmissions for which the manufacturers authorize either automatic tranny oil or straight 30 weight lube oil. I've always assumed that you would NEVER ever put ATF in an engine. Can anybody explain the properties of these two oils which allow 30 wt to be substituted for ATF in a tranny but not ATF in an engine?