Bad idea! 50/50 Dexcool, and water, weather you buy it premixed or have to mix it yourself, Dexcool only!

 

Checked radiator it was full of antifreeze now I must drain and refill with dexcool replace stat while im in there I will be using a napa thermostat I work for them

 

Good luck with that, we’ve seen time and time again, other brands of thermostats failing with 3 to 6 months. The problem is they don’t open within the parameters the ECM is looking for. This resulted in a CEL P0128.
I’ve had Stant, Motorad and a store brand, all failed.
I was reluctant to spend the money on the AC Delco 131-158, but no issues since 2012.

 

X-2

OP seems to want to keep stepping outside the Box.

NAPA is a good company and handles many quality products, but in this case it might be wise to take the advise from Experienced HHR Pro's here.

There are always exceptions in Life.....

Silverfox

 

You pays your money, you takes your chances.

 

NAPA should have or be able to get the OEM (AC Delco) one, shouldn't they?
I imagine there would still be an employee discount.

I learned lessons on the LT.
No way I am cheaping out on the SS!

 

Napa stat are made by stant last I knew of How much would a ac delco dealer charge for a thermostat I don't want to do this job again in 6 month's. Thanks for the answers everyone.

 

My shop is a NAPA shop. The owner of the shop won't use a NAPA t-stat in these things. Only the AC-Delco.

 

When Stant or any of the other manufacturers starts using the correct design their t-stats will be worth bragging about.

BTW, the cheap AC/Delco one sucks too.