rScotty
Super Member
- Joined
- Apr 21, 2001
- Messages
- 8,258
- Location
- Rural mountains - Colorado
- Tractor
- Kubota M59, JD530, JD310SG. Restoring Yanmar YM165D
I'd use the more viscous oil. Not too much; a couple of squirts ought to do it. There isn't a lot of room in the compression chamber of a diesel & you don't want to bend a rod.What grade oil? 15W40 that is thick or SAE 30 being a tad thinner? 5W30 may be useless to test with wet.
Also give a little thought to oil as fuel. Hopefully this test will increase the compression - and there is a point at which lube oil and diesel fuel start to look similar to a diesel. If you can ignite it, chances are the diesel can too.
rScotty