Red Line 60103 SI-1 Complete Fuel System Cleaner - 15 Ounce- Fuel Injector Cleaner and Carburetor Cleaner for Corrosion Prevention and Injector, Valve, and Combustion Chamber Deposit Removal

Great product, really seems to clean the fuel injection system.

The only thing that eliminates the DTE error in my Mustang. Cleans the Sulphur off of the float and removes ethanol buildup. My wife's picky Jaguar engine performs phenomenally better after a third of a bottle. Faster throttle response and the dreaded hesitation under heavy acceleration is eliminated. I just add the rest to my other cars because I know it is going to provide preventive measures in the long run.

I’ve run just about every type of injection cleaner there is, and this one works the best for me. I ran two bottles through my 120.000 mile Tacoma back to back; and the engine accelerates noticeably smoother now. I plan to run one through my tank at every oil change from now on.

i am amazed by how effective this is. i thought that it would not have a significant effect but i was so wrong. i am getting much better efficiency per gallon in my car. you really start to notice the difference during the next gas tank. ever gas car owner should use this. but poor labeling because i am unable to read any of label instructions, storage guidelines, or warnings. they put the secondary barcode which covered the important manufacturer labeling as seen in images

Summary: Red Line Complete SI-1 Fuel System Cleaner does what it claims to do. I can report two major improvements in performance, one objective and one a bit subjective. Objective improvement: 45% better gas mileage. Subjective improvement: No longer stalls going up the dreaded hill. This may be partly due to my improved skill with clutch and throttle, but I credit at least part of it to the Red Line Complete treatment. Caveat: Perhaps I am a bit generous with my “informed consumer” filters. One of the claims on the package is, “Regain lost horsepower.” Apply that filter to all of the claims. If your vehicle is performing anywhere near the manufacturer's stated performance, no, this product will not improve it. But if your vehicle is performing poorly in comparison to the manufacturer's statements, and you have any reason to suspect that it is suffering from fuel system fouling, this product might make it better, and the purchase price is a good bet. If you use this product and do not see significant improvement, you have some other problem, and you haven't lost much. If you use this product and see the improvement you want, that's a win. Details: The vehicle: I bought my daughter's disused 2005 Suzuki DS500F that had been sitting in her basement for two years, the engine only having been run briefly once a month or so to make sure it was still in running condition. I installed a new battery changed the oil and oil filter, and inflated the tires. That's it. Initial performance was horrible. After burning out the old gasoline and establishing a new baseline for mpg measurement, I got 43.6 mpg, averaged over three tankfulls, compared to the manufacturer's rating of 56.3 mpg (and some reviewers' seemingly preposterous claims of 65 mpg), and I could not climb the on-ramp from Spit Brook Road eastbound onto the Everett Turnpike northbound without stalling two or three times. Treatment: The bottle says to use the full bottle in 20 gallons of gasoline. My 4.5 gallon tank should only take about a quarter of the bottle. Conveniently, there is a notch in the label to show you the half-bottle point, which should be about right for most contemporary cars. I had to eyeball a quarter of a bottle. (I put a half-bottle in my wife's Ford Escape, but we have not been measuring its performance. Saving the remaining quarter bottle for a follow-up treatment in the bike, but it looks like it won't be needed.) I hoped to see some improvement in my first tank _after_ the treatment. In fact, I saw measurable improvement in the tank in which I used the Red Line Complete (51 mpg). (Shortly after the treatment, my speedometer broke – twice – so I had to reestablish my mpg baseline about four tanks after the treatment.) In the past five tanks after the treatment (and after the second fix to the speedometer), I am averaging 63.1 mpg. Yes, borderline preposterous, but that's why I'm using an average. The best single tank was 69.4 mpg but, OK, I could have overfilled a little on the previous tank and underfilled a little on the subsequent tank, but such errors should smooth out in the average, and it's 63.1 mpg over five tanks. Most of my driving is under highway conditions or nearly so. My daily commute is about 200 feet of city streets, three miles of limited-access highway, and two miles of 45 mph secondary roads, and the reverse for the trip home. My weekend excursions are about 20 mile round trips on secondary roads, and the occasional 260 mile round trip to the White Mountains, mostly on limited-access highways (where I got the 69.4 mpg). Not much city driving. And now I can make that left turn from a stop up a 6% grade with the engine still a little cool without stalling. That may be partly because I've gotten better with the clutch and throttle, but I think it's at least partly because of the Red Line Complete Fuel System Cleaner. I am well pleased with the product, and beyond pleased with the bike.

I think this is one of the best products on the market, IT WORKS! plus it also contains an upper cylinder lubricant that ALL engine can benefit from. Can't go wrong!

Great product. It stopped my Volvo from misfiring. Took 30 miles to work. 1 whole bottle in 1/2 tank of gas.

I like to put a whole bottle of this stuff down my tank. I own a 30 year old car and it sat for 2 years before I finally decided to use it again. Basically it was running a little rough and it was sluggish at first but after consistently using this stuff for a whole month, it fixed a particular issue in my engine. Now obviously this isn't a replacement for injectors but this helps clean up a whole lot of the gunk that's inside. One thing is I didn't run the tank empty. I'm not going to do that. but what I did do,bis that before my tank was empty like maybe less than a quarter tank left, I poured a whole bottle of this stuff in then I went and filled it up. then I went over some speed bumps to kind of shake the car up a bit to make the stuff mix. listen if it works it works and it worked and now I don't have to dig inside my engine to replace my injectors. ain't no way I'm messing with those spider injectors inside of a V6 vortec 😎

Cleared a blocked system in a generator for that 5 stars....for a car where most if it went into didn't get the result I wanted but I was thinking maybe one more bottle but I get rid of car in the end...so I still think its worth a try if you've the money to give it a go I know I will in the future with other cars to see how it goes...but it got a 6 kW generator going again.

An absolute bliss of product. Engine smoothens out completely and can be felt definitive. Used this vehicle for my 15 year old car (Swift), 24 year old bike (Kawasaki 125 cc, two stroke), Jawa 42 and Harley Street 750. Effect was pronounced in all vehicles and is a great product to use. Shall use this product all the time, so shall request the sellers to make available always.Every vehicle can use.....

ممتاز جداً من أول مشوار تلاحظ الفرق في أداء السيارة وصوتها والصرفية

Fácil de utilizar. El motor responde normal después de llenar el tanque. Espero que se vean sus resultados en el futuro.

RED LINE を愛用しています。段々値段が上がっている様ですが、梅雨時とか、エンジンのふけが悪い時に使用します。 初回は満タン時に1本、以降は満タン時にチョットづつ入れています。 私にはかなり効果があり、愛車も23万ｋｍになり、調子も最高です。