My 6.2 chevy van has a warning near the intake - "NOTICE- DO NOT USE STARTING FLUIDS, IMMEDIATE ENGINE DAMAGE CAN RESULT"

I never use ether on a diesel engine. I use it on gasoline engines only.

I use WD-40 on very rare occasions. My local injection pump shop uses WD-40 to help start some engines after a pump rebuild, etc.

Ether is too "hot" for high compression engines, ignites too early, burns too fast.

I have 14 ,or so,diesel vehicles/trucks/tractors. MB, Chevy, Cummins, Case, Massey-Ferg.

Good maintenance = no starting aids required. Note: I do live in TN...occasional single digit temps. only.

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Diesel-guy