- Multi-System Tune Up | 473 ml | Petrol & Diesel Fuel Additive for Cars | Engine Treatment, Fuel Injector Cleaner & Fuel System Cleaner | Removes Carbon Deposits, Improves Mileage & Performance

Though too early to say as i used the product 2 weeks back only and not run a full tank yet. However initial observations are positive, as I could see grey/black smoke through the exhaust on idling which is carbon being flushed out. Also an inmprovemt in fuel efficiency on MID and throttle response is evident. Lastly since it has PEA, it is bound to be effective while being gentle on the engine when compared to solvent based cleaners

I think among all the additives I have used this one stands out. It restored my car performance and could definitely feel a positive change.Highly recommended.

I have Maruti Suzuki Swift Zxi 2006 ( 1st Gen), Recently, after 18 years of service, the engine started to misfire. Initially I thought this is due to worn spark plugs, so I installed new ones, all of them. But the engine continued to misfire. Checked ignition coil, battery is new, everything was fine. Removed fuel injectors to visually check it, they seemed ok. Cleaned Throttle body, EGR manually etc. Still problem persists . FYI I service car my self, you know basics, oil filter, air filter, cabin filter, plugs, bulbs and so on, not the major parts such as Suspensions etc. I knew this car’s engine is old now, problems will arise. But I don’t want to lose hope, so I did some research and found this product, I read the instructions, followed them. Filled Gumout Multi while fuel gauge was blinking then topped the tank full. Went for a drive for 240 kms. As I was returning, I stopped for natures call and kept the engine running to hear if there are any missing sound coming from the exhaust. The exhaust sounded like it’s in the rhythm. Pick up also increased, I will do this for three times as the engine is old, I will update in the future for pros and cons. Go for it, for old engines use at least 2 circles.

Will buy again

enhance in power and silence in vibration and noise

Bought Gumout for my 2007 Maruti Suzuki WagonR, and it's impressive! After using it, the engine feels smoother, and mileage has noticeably improved. Easy to use and worth every penny. Highly recommended for maintaining fuel system health. Will definitely buy again. Great product for keeping my beloved WagonR running strong!

Best

Gumout fuel system cleaner helps in restoring the lost engine power. Excellent cleaning agent. I was able to feel the difference in just 5 kms. It has made my car very smooth. I do advice people to buy this product as it does not harm to the car. I purchased this from SHOPPERS ISLAND INDIA Seller. Genuine seller. Highly recommended *****

毎日の通勤では片道数キロしか走らないため汚燃費を叩き出してるスポ車に燃料・オイル共に規定量投入中の洗浄を兼ねて遠距離ドライブしたところ、これまでに見たことのない燃費を叩き出しました。今まで高速乗っても15前後しか燃費が伸びなかった車が21まで燃費が覚醒しました。あとはこの覚醒がいつまで続くか楽しみ

I’ve been really impressed with the Gumout Multi-System Tune-Up. After using just one bottle, my engine felt noticeably smoother, with better throttle response and quieter idling. It does a great job cleaning the entire fuel system, helping remove carbon buildup from injectors, valves, and combustion chambers, which makes a real difference in performance. I also appreciate that it helps improve fuel efficiency and protects against corrosion from today’s ethanol-blended fuels. It’s incredibly easy to use — just pour it into the tank and drive — and it works on cars, trucks, and even small engines. For the price, this product delivers excellent results and is a simple way to keep your engine running strong and clean.

As good as it says

Purchase twice for my 2013 Lancer Fortis, I can say that the product is so effective that you can immediately feel the difference after awhile.

Excellent product and fast shipping i put half in the tank and half in the crank case. Will see what's ginna happen.