Until a bio diesel that is not an ester is produced, I will not use it.
This is based on the likelihood of polymerization of the ester under high temperatures and pressures as a competing reaction to combustion.

As motors move to high pressure injection systems, the suitability of the current bio diminishes. A new type of bio that is derived from fully saturated fat/oil and not an ester will be required.

__________________
Grumpy Old Diesel Owners Club group

I no longer question authority, I annoy authority. More effect, less effort....

1967 230-6 auto parts car. rust bucket.
1980 300D now parts car 800k miles
1984 300D 500k miles
1987 250td 160k miles English import
2001 jeep turbo diesel 130k miles
1998 jeep tdi ~ followed me home. Needs a turbo.
1968 Ford F750 truck. 6-354 diesel conversion.
Other toys ~J.D.,Cat & GM ~ mainly earth moving