Does anyone know the proper way to bleed the cooling system on a 1971 Buick Skylark 350 V8?
Bleeding cooling system on classic car
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Fill,run with cap on until stat opens.turn off ck and fill when cool.there should be a cold fill mark on the tank if the overflow dumps on the ground and not into a bottle.
Originally Posted By: NHGUY
Leave radiator cap off,run engine,watch fluid level,add coolant as level drops drops,when thermostat opens and level tries to overflow,close radiator cap.Of course leave heater valve open to HOT beforehand.
This is pretty much how I have done it for years. After driving a few days and cool downs, I would remove cap and check coolant levels.
Leave radiator cap off,run engine,watch fluid level,add coolant as level drops drops,when thermostat opens and level tries to overflow,close radiator cap.Of course leave heater valve open to HOT beforehand.
This is pretty much how I have done it for years. After driving a few days and cool downs, I would remove cap and check coolant levels.
Leaving the cap off just let's coolant blow out.better to leave the cap on.any air will migrate to the cap area.
1971 Buick Skylark 350 V8, classic car?
Originally Posted By: OneEyeJack
1971 Buick Skylark 350 V8, classic car?
That's what my insurance coverage says!
https://www.hagerty.com/price-guide/1971-Buick-Skylark
1971 Buick Skylark 350 V8, classic car?
That's what my insurance coverage says!
https://www.hagerty.com/price-guide/1971-Buick-Skylark
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Some cars have a bleeder screw in the cooling system. It sometimes resembles a brake fluid bleeder screw.
I don't know about your car.
I don't know about your car.
Originally Posted By: NHGUY
Leave radiator cap off,run engine,watch fluid level,add coolant as level drops drops,when thermostat opens and level tries to overflow,close radiator cap.Of course leave heater valve open to HOT beforehand.
This above is how most of us old folks bled/filled the cooling systems in classic cars... Drive it for a few days after and keep checking the coolant level after the car has cooled off. If it needs coolant then add, if its full then you are done...
Leave radiator cap off,run engine,watch fluid level,add coolant as level drops drops,when thermostat opens and level tries to overflow,close radiator cap.Of course leave heater valve open to HOT beforehand.
This above is how most of us old folks bled/filled the cooling systems in classic cars... Drive it for a few days after and keep checking the coolant level after the car has cooled off. If it needs coolant then add, if its full then you are done...
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Originally Posted By: Boss302fan
Originally Posted By: NHGUY
Leave radiator cap off,run engine,watch fluid level,add coolant as level drops drops,when thermostat opens and level tries to overflow,close radiator cap.Of course leave heater valve open to HOT beforehand.
This above is how most of us old folks bled/filled the cooling systems in classic cars... Drive it for a few days after and keep checking the coolant level after the car has cooled off. If it needs coolant then add, if its full then you are done...
Isnt this how newer cars can be done too?
Originally Posted By: NHGUY
Leave radiator cap off,run engine,watch fluid level,add coolant as level drops drops,when thermostat opens and level tries to overflow,close radiator cap.Of course leave heater valve open to HOT beforehand.
This above is how most of us old folks bled/filled the cooling systems in classic cars... Drive it for a few days after and keep checking the coolant level after the car has cooled off. If it needs coolant then add, if its full then you are done...
Isnt this how newer cars can be done too?
Most of them, yes...
I use plain jane green conventional coolant. Zerex makes an original green formula coolant and I think you can still get conventional green at NAPA.
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I'm using Rotella Ultra ELC.
Originally Posted By: DoubleWasp
I'm using Rotella Ultra ELC.
In the '68?
I currently have Texaco/Havoline Red ELC Coolant in the '80 Firebird FORMULA. It's ready for another change as the last time I flushed/filled was in 2008. I have always use conventional GREEN 'cept this last time when I used the Diesel Coolant which is supposed to be good for 8 years/750,000 miles in a diesel rig.
I'm using Rotella Ultra ELC.
In the '68?
I currently have Texaco/Havoline Red ELC Coolant in the '80 Firebird FORMULA. It's ready for another change as the last time I flushed/filled was in 2008. I have always use conventional GREEN 'cept this last time when I used the Diesel Coolant which is supposed to be good for 8 years/750,000 miles in a diesel rig.
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