








🛠️ Drive with confidence—engine protection that never quits!
Zerex G40 50/50 Ready-to-Use Antifreeze Coolant by Valvoline delivers industry-leading freeze and boil protection with advanced Si-Organic Acid Technology. Pre-mixed for convenience, it safeguards all cooling system metals—including aluminum—against corrosion, leaks, and deposits. Trusted by premium European automakers, this long-life formula offers a 5-year/150,000-mile guarantee, ensuring your engine stays cool and reliable through every season.










| ASIN | B08GF2ZBCQ |
| Best Sellers Rank | #102,436 in Automotive ( See Top 100 in Automotive ) #135 in Antifreezes & Coolants |
| Brand | Valvoline |
| Customer Reviews | 4.7 4.7 out of 5 stars (244) |
| Date First Available | September 6, 2020 |
| Item Weight | 9.31 pounds |
| Item model number | 861399-EA |
| Manufacturer | Valvoline |
| Manufacturer Part Number | 861399-EA |
| Model | G40 |
| Product Dimensions | 7.3 x 4 x 12.05 inches |
B**D
As described.
It’s coolant. It keeps engine from overheating. It’s for a Porsche.
H**P
no freezing here
better price than the auto parts store.... and the right color.
W**M
Pre mixed, ready to use
Happy to have received this with no issues. Added to my 2019 Mercedes E300 with no problems. Low coolant message went away
K**R
great
great
C**A
Works good
My husband used this in his Porsche macan and it seems to work great.
I**U
Perfect
Quality
H**M
A Go-to Coolant for Porsche Owners
Rather than spending more on "Porsche" branded (even though they don't produce them), this is very popular amongst Porsche owners (and other German cars, as applicable). Used to fill low coolant, the same color as the existing coolant (not sure what previous owner filled) and cheaper than OEM. Would not hesitate to purchase another Zerex (blue) for other cars. Highly recommended.
M**U
What was needed for my Porsche.
This is the appropriate replacement coolant for my Porsche. I have owned it for five years and never topped up the coolant. It started to concern me, and I found that this was the most cost effective product to use in this case. Really good for the price. I feel confident using it in an expensive engine. Glad I bought it.
Trustpilot
3 weeks ago
1 week ago