Best in 7 days
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Description
Roger FedererRen Stauffer has been closely covering Roger Federer's career for nearly 25 years. In this comprehensive biography, Stauffer talks at length to the man himself, his family, friends, coaches, and rivals to paint an unrivalled picture of the greatest male tennis player of all time. From his early life in Basel, Switzerland, where he first picked up a tennis racquet, to the heights of his 20th Grand Slam victory and all points in between, Stauffer
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Best in 7 days
Best in 7 days
Best in 7 days
Best in 7 days
4.0 ★★★★★
Based on 1442 reviews
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Product Reviews
★★★★★ 5
Money Saver!!!!
Purchased yesterday and put bot cans in my gas tank. Very pleased with how it works. Had a code P0175 02 sensor bank 2. Thought I had to replace the sensors but looked into products and read the reviews of these can. Check engine light went off this morning. Drove it aggressively after I used the cans and they worked as advertised. Highly recommend.
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Reviewed in the United States on May 12, 2026
★★★★★ 5
car performance improvement
I bought this to use in my 2021 chevrolet equinox when my check engine light came on with an exhaust issue. so far I believe it's working. I have noticed increased mileage and a little more "zip" in the engine.
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Reviewed in the United States on May 28, 2026
★★★★★ 5
Works for us!
We use this regularly in my car. Seems to help keep sensors clear. My engine light comes on if I don’t add. We add it to gas tank. My husband says it’s because of poor quality (dirty) gas from other countries.
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Reviewed in the United States on May 22, 2026
★★★★★ 4
Works like a supplement
If you use it and see a difference, you will blame it on this cleaner, if not, you will say the product does not work. Exactly like your weight loss supplements! Who knows what this stuff does, but it may do something. Or maybe it does not.
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Reviewed in the United States on February 7, 2026
★★★★★ 5
Used to clean an O2 sensor
Seems to have resolved an issue with a wavering idle for my 89 Mercedes 300e with 468,000 miles.
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Reviewed in the United States on March 27, 2026
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