What is a normal amount of coolant loss?
It is normal that, whether you keep enough coolant in your car, the level will drop at least 0.25% every 5 months without any damage or leakage. So the calculation says your car will lose at least 1 inch of coolant every year. This measurement is normal for the car.
Why does my GM engine keep losing coolant?
Worse, allowing the problem to go on often results in a new engine. Often General Motors vehicles, with the 5.3L and 4.8L engines have come to us because they continue to lose coolant. Normally the owner has tried in vain to find the leak and sometimes, multiple auto repair shops have been unable to find a source.
Can a 5.3L Vortec leak hot coolant?
You may never see a small leak when the engine and coolant is hot because it evaporates immediately after it leaks. The 5.3L Vortec has a dry intake manifold therefore the leak cannot be there. I finally sent an oil sample to Blackstone Labs ( http://www.blackstone-labs.com ) and they confirmed that I had coolant in my oil.
How long has my Silverado Z71 been losing coolant?
From buying research to owner support, join 1.5 MILLION GM Truck Enthusiasts every month who use GM-Trucks.com as a daily part of their ownership experience. HELP! I have a 1999 Silverado Z71 with a 5.3 that has slowly been losing coolant for about two years. I have had to add about one pint dexcool between regular oil changes.
Is there a coolant leak in my Silverado?
I have a 2000 Silverado with the 5.3 vortec v8 I bought with 138k miles on it. I am currently noticing the coolant leak not sure where it is coming from as of yet.
You may never see a small leak when the engine and coolant is hot because it evaporates immediately after it leaks. The 5.3L Vortec has a dry intake manifold therefore the leak cannot be there. I finally sent an oil sample to Blackstone Labs ( http://www.blackstone-labs.com ) and they confirmed that I had coolant in my oil.
Worse, allowing the problem to go on often results in a new engine. Often General Motors vehicles, with the 5.3L and 4.8L engines have come to us because they continue to lose coolant. Normally the owner has tried in vain to find the leak and sometimes, multiple auto repair shops have been unable to find a source.
Is there coolant leak in Chevy Suburban 5.3?
If you pressurize the cooling system with the valve covers off, you may even be able to see it leaking. Sorry for the bad news:- ( 2001 Chevy Suburban with 5.3 with close to 100,000 miles that is loosing coolant and can not find leak.
Where is the most common area of coolant loss?
If you have any doubt, do a quick oil analysis and that will tell you exactly how much coolant is in the oil, if any. The most common area of coolant loss on this engine is the water pump gasket. Especially on the earlier models. It typically will leak such a small amt that you will never see a drop hit the ground.