1995 GMC Sierra 5.7L Coolant Type

[jhellwig]

Huh? My 98 S-10 started showing slight coolant in the antifreeze…. With its 4.3L v6. So I’d suspect a 95 with a 350 would too.

OP says it’s always had green. So either it was flushed well or the issues never happened. I’d run the silicates green, not the AMAM dexclone green, or else another HOAT.

95 and prior had one piece metal intake manifolds on the 4.3 and V8s like all SBCs had. 96 and later had the vortec heads and 2 piece intakes that had issues.

 

[Auto tech]

Correct