Coolant change
Thread Starter
Instructor
Joined: Jul 2011
Posts: 109
Likes: 3
Coolant change
I have read many threads on this subject, and not sure I am going to attempt removing the two block drain plugs from engine. My 1980 has115,000km on it and have done the Prestone flush then fill with 50/50 mix more a few times. Plugs look like a big pain on the 350 small block.
Last edited by nickster2213; Aug 19, 2020 at 09:02 PM.
Le Mans Master
Joined: Jun 2019
Posts: 7,656
Likes: 2,469
From: Indiana
Not a chance would i take them out..
flush and fill is fine unless it sat without changes for a long time...imo
even dump from radiator and refill more frequently using purified water or pre mix...some say if always hot area..more water than antifreeze like 60/40 as opposed to 50/50...
use the green stuff..i made mistake of the gm dexcool after radiator heayer core fix...was told no go..here
flush and fill is fine unless it sat without changes for a long time...imo
even dump from radiator and refill more frequently using purified water or pre mix...some say if always hot area..more water than antifreeze like 60/40 as opposed to 50/50...
use the green stuff..i made mistake of the gm dexcool after radiator heayer core fix...was told no go..here
