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why do i have to have vitamin b12 injections B12 Shots: Amazing Benefits You Should Know About

Marsoni M251S
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Michael Sliwinski
Port Orchard, US
★★★★★ 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
M
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Marvin Burton
San Leandro, US
★★★★★ 3
Nothing
Didn’t work for me
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Reviewed in the United States on May 26, 2026
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Verified Purchase
mechanic
Grantham, US
★★★★★ 1
It doesn’t work
This don’t work at all. I do not recommend. I use all four containers, and the light is still on.
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Reviewed in the United States on May 20, 2026
A
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Amazon Customer
Cuba, US
★★★★★ 5
2014 Ford Edge SEL
Worked like a charm! Used as directed, it cleared the P0420 & P0430 codes that were coming up on my OBD II scanner after a complete engine swap. Definitely recommend this product.
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Reviewed in the United States on May 23, 2026
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vance
Lowell, US
★★★★★ 4
Good parts
They fit
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Reviewed in the United States on May 5, 2026

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