Let us know what you find out.

I've always used the NAPA green coolant, the NAPA test strips, and NAPACool additive to keep the nitrites up. No worries about compatibility that way, and it's cheap and it's available in my little town.

__________________
'75 John Deere 450C (times 2)
'83 240D plus parts car
'87 F350, 6.9L IDI
'89 F350 crewcab, 7.3L IDI
'89 F-Superduty, 7.3L IDI
'91 F-250, 7.3L IDI
'91 F-350, 7.3L IDI
'94 F-350 Crewcab, 7.3L IDI
'94 E-350 Ambulance, 7.3L IDI