Why do manufacturers not recommend a fuel additive?

People Say I'm Full of Crap About Fuel Additives, Well Watch This

Motor Oil & Fuel Additives: Just a WASTE of MONEY?

5th Gear Test Redex On The Dyno With Surprising Results

Which Diesel Anti-Gel Additive is Best? Power Service Diesel, Howes, Hot Shots, Stanadyne

Redex diesel additive - What happens when you add 2 bottles to one tank?

Stp fuel system cleaner did the impossible!

People Say I'm Full of Crap About Fuel Additives, Well Watch This

The Fuel Additive Mechanics Don’t Want You to Know

Fuel Additives & Injector Cleaner - Explained

Is Techron better than Seafoam? Let's see the proof!

Archoil AR6500 review, bad overtakes good. Are you aware of the bad side of diesel fuel additives?

The *TRUTH* about Diesel Additives - WATCH BEFORE USING!

Redex Diesel Injector Cleaner, Does it Work? Redex Diesel System Cleaner Real World Test (MPG/BHP)

I Can't Believe What This Fuel Cleaner Did to My Customer's Car

Mechanics Don't Want You to Know About This

Best Fuel Injector Cleaners 2024 - The Only 7 You Should Consider

Wynn's diesel injector cleaner TEST/PROOF, before/after fuel treatment and it works

LIQUI MOLY Additives Explained - (Engine Flush, Injection Cleaner, Cera Tec, Valve Clean, and More!)

Are Fuel and Oil Additives Really Worth Your Money? Here's What You Need to Know!

I Can't Believe What This Fuel Cleaner Did to My Customer's Car