# TLDR Review: PEAK 50/50 Antifreeze and Coolant

*Published: 2025-05-16 | Updated: 2025-05-16 | Source: https://shopsavvy.com/reviews-tldr/peak-5050-antifreeze-and-coolant*

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## Product: PEAK 50/50 Antifreeze and Coolant
**Brand:** PEAK

## Pros
- Provides significant savings compared to other retailers, with rebates for additional savings.
- Conveniently comes as a ready-to-use 50/50 mix, eliminating the need for additional water.
- Ideal for high-mileage vehicles, performing well in vehicles with extensive mileage like a 2010 Dodge Nitro with 396K miles.
- Effective in resolving coolant issues, including sudden pressure loss and smoke from the engine.
- Known for its reliability and long-standing reputation, making it a popular choice.
- Good value for money, with better affordability than gas station prices.

## Cons
- The performance of this product was noted as significantly slow for some users.
- May need to use full strength antifreeze instead of 50/50 for proper engine maintenance.
- Draining the radiator can leave a diluted solution trapped in the engine block.
- Post-flush, antifreeze concentration can end up lower than the desired 50%, suggesting checking with a hydrometer.

## Bottom Line

The PEAK 50/50 Prediluted Antifreeze and Coolant offers excellent value with its convenient pre-mixed formula and reliability, particularly for high-mileage or aging vehicles. While it does provide significant savings and effective performance, users should be aware of potential dilution issues during changes and consider verifying concentration levels. Overall, it's a trustworthy choice for maintaining engine cooling systems.

## Pros vs Cons at a Glance

| Pros | Cons |
|------|------|
| Provides significant savings compared to other retailers, with rebates for additional savings. | The performance of this product was noted as significantly slow for some users. |
| Conveniently comes as a ready-to-use 50/50 mix, eliminating the need for additional water. | May need to use full strength antifreeze instead of 50/50 for proper engine maintenance. |
| Ideal for high-mileage vehicles, performing well in vehicles with extensive mileage like a 2010 Dodge Nitro with 396K miles. | Draining the radiator can leave a diluted solution trapped in the engine block. |
| Effective in resolving coolant issues, including sudden pressure loss and smoke from the engine. | Post-flush, antifreeze concentration can end up lower than the desired 50%, suggesting checking with a hydrometer. |
| Known for its reliability and long-standing reputation, making it a popular choice. |  |
| Good value for money, with better affordability than gas station prices. |  |

## Current Prices

| Retailer | Price | Availability |
|----------|-------|-------------|
| Gopuff | $6.52  | Check |
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| Blain's Farm & Fleet | $9.99  | Check |
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| JBTools.com | $11.42  | Check |
| Amazon | $11.69  | Check |
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| Lowe's | $12.99  | Check |
| RVupgrades.com | $13.53  | Check |
| Instacart | $13.79  | Check |
| Cornell's True Value Hardware | $13.99  | Check |
| Country True Value | $13.99  | Check |
| Dover Mart | $13.99  | Check |
| O'Reilly Auto Parts | $13.99  | Check |
| Get Your Thing | $14.19  | Check |
| truevalue.com | $14.49  | Check |
| Advance Auto Parts | $14.99  | Check |
| Life and Home | $14.99  | Check |

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*About this review: We pulled together findings from professional and user reviews, and cross-referenced them with ShopSavvy's pricing data from thousands of retailers to give you the short version.*