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JM

John Martin

Member since Invalid Date
1
Review
3.0
3 out of 5 stars
Average rating

Reviews by John Martin

DI

Diesel Additive

View company profile →

3 out of 5 stars
Jan 4, 2026

Decent but not a miracle

While I did notice some improvement in my fuel economy, I expected more based on the claims. It seems to help, but it won't fix all issues.

10 found helpful