Post Your Latest Coolant Change.
- Thread starter 660mag
- Start date
- Joined
- Nov 20, 2021
- Messages
- 2,210
1989 Chevrolet S10
4.3 TBI V6
Water pump replacement, drain and fill no flushing
Out: Shellzone conventional green
In: Prime Guard conventional green full strength, distilled water mixed 50/50
2001 Chevrolet Tahoe
5.3 Vortec V8
Water pump and heater hose replacement
Drain and fill, no flushing
Out: mostly water
In: Prime Guard Dexcool premix
4.3 TBI V6
Water pump replacement, drain and fill no flushing
Out: Shellzone conventional green
In: Prime Guard conventional green full strength, distilled water mixed 50/50
2001 Chevrolet Tahoe
5.3 Vortec V8
Water pump and heater hose replacement
Drain and fill, no flushing
Out: mostly water
In: Prime Guard Dexcool premix
2005 Tahoe, 6.0/4L60E 327k
New radiator in 2023
Replaced water pump and thermostat
OUT: Peak 10x... couldn't find any locally... where is this stuff... everyone is OOS?
IN: Prestone concentrate DEX-COOL and distilled water and a jug of Supertech DEX-COOL for top up
Flushed the heater core, radiator and block out good with water. Figured it is a GM and it can have DEX-COOL. Easier to find anyways.
New radiator in 2023
Replaced water pump and thermostat
OUT: Peak 10x... couldn't find any locally... where is this stuff... everyone is OOS?
IN: Prestone concentrate DEX-COOL and distilled water and a jug of Supertech DEX-COOL for top up
Flushed the heater core, radiator and block out good with water. Figured it is a GM and it can have DEX-COOL. Easier to find anyways.
I had a '66. Who knew what it would be worth, and what fun it would be, today. Beautiful cars.
- Joined
- Nov 20, 2021
- Messages
- 2,210
This one is a factory four barrel four speed with a limited slip. About as close to original as you can get.
I didn't do a D&R, but just a top off to keep the level in check.
2000 Buick Century 71k miles
Had Valvoline do a flush 2 years ago at around 35k which was the original coolant.
Had them do it again today at 71k. They use their MaxLife Coolant.
I plan on doing the intake gaskets next year when she hits 100k if it needs it or not, so it’ll get done again after that. Then I’ll just do drain and fills from that point on.
Had Valvoline do a flush 2 years ago at around 35k which was the original coolant.
Had them do it again today at 71k. They use their MaxLife Coolant.
I plan on doing the intake gaskets next year when she hits 100k if it needs it or not, so it’ll get done again after that. Then I’ll just do drain and fills from that point on.
2019 GX460 55,400 miles
Out: OEM Lexus/Toyota Pink SLLC
In: Toyota Pink SLLC - radiator only
Just did a radiator drain and fill. Less than a gallon.
Maybe empty the block drains soon - when weather cools. System has 14 to 16 quart total capacity. But, Lexus recommends flush at 120k or 10 years, 50k thereafter.
Car care nut says 50k is better. Some owners just do radiator flush yearly.
Phoenix coolant strips looked ok for ph and cooling.
Out: OEM Lexus/Toyota Pink SLLC
In: Toyota Pink SLLC - radiator only
Just did a radiator drain and fill. Less than a gallon.
Maybe empty the block drains soon - when weather cools. System has 14 to 16 quart total capacity. But, Lexus recommends flush at 120k or 10 years, 50k thereafter.
Car care nut says 50k is better. Some owners just do radiator flush yearly.
Phoenix coolant strips looked ok for ph and cooling.
Last edited:
2005 Toyota Matrix XR
165K miles
New Denso radiator and Gates hoses installed; two years and 15k since last coolant change.
Out: Peak 10X
In: same
165K miles
New Denso radiator and Gates hoses installed; two years and 15k since last coolant change.
Out: Peak 10X
In: same
2014 Mustang GT
38,000 miles
drained radiator and used the Airlift 550000 vacuum coolant filler to install the new coolant. It made it a very fast process.
Used Motorcraft yellow coolant and distilled water.
Changed out 6 quarts and system holds 13.
38,000 miles
drained radiator and used the Airlift 550000 vacuum coolant filler to install the new coolant. It made it a very fast process.
Used Motorcraft yellow coolant and distilled water.
Changed out 6 quarts and system holds 13.
ls1mike
$50 Site Donor 2025
The boy and I did the coolant on his 2003 Duramax while we had his CP3 pump off.
2006 Trailblazer 4.2L. 272,000km. Just did the water pump so whatever came out the block and rad was what was changed when I did the pump last in 2013 and thermostat in 2019.
In went Acdelco Dexcool as it was at the dealer and price not bad. Put in two gallons of premix and after a couple heat cycles, she's right on the money.
In went Acdelco Dexcool as it was at the dealer and price not bad. Put in two gallons of premix and after a couple heat cycles, she's right on the money.
2005 Dodge Magnum, thermostat rubber thingy pooped out and tstat couldnt close.
Out, MoPar red, in since 2016, in, Zerex G05, twice.
FSM says they "staked" the tstat housing, they should have said theres a notch to line up the tstat properly, cause if it isnt it wont get to proper temp....
I place the blame 70% Dodge 30% on me....heh
Out, MoPar red, in since 2016, in, Zerex G05, twice.
FSM says they "staked" the tstat housing, they should have said theres a notch to line up the tstat properly, cause if it isnt it wont get to proper temp....
I place the blame 70% Dodge 30% on me....heh