Cooling system additive in Ford 7.3 IDI ?
I recently puchansed a 1994 Ford F250 IDI non-turbo . The previous
owner
just changed the water pump about 6 months ago and flushed the cooling
system and replaced with ( gold color ) Prestone Extended Life
antifreeze at %50 dilution but didn't add in the any of the cooling
system additive ( called FW16 in the owner's manual ) . Is this OK with
this kind of
antifreeze or do I need to put some in ? - thanks
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