![]() I only drive interstate periodically so the maintenance dose seems to work for me. ![]() My wife commutes long distances for her job, so the bottle of SI-1 in the tank of fuel prior to an oil change seems to work best on the Honda's we've owned. Freeway speeds move large amounts of air and fuel through an engine for a longer period of time, coupled with somewhat prolonged stable operating temperatures. Top tier gas use is helpful, but its not the holy grail just licensed to "Meet A Higher Detergency Standard" I'm from the school that short-trip, stop and go driving builds carbon and injector degradation faster than mostly highway/expressway type driving. Gasoline is different all over the country traffic patterns vary, driving styles vary, so there is no holy grail answer that covers all vehicles and/or drivers. If you track every tank of gas you put into your vehicle, you can see your own trends, and then make the decision for the corrective action that you feel works best for you. ![]() I personally have tried both over the last 25 years. There are also 2 basic schools on its use use 1 bottle in a fresh fill-up before an oil change (concerns about oil contam/carbon wash through), or, use a maintenance dose with every fill-up. This has been around quite some time searches here will pull up numerous discussions concerning the efficiency, financial equity/effectiveness of its use. This is one of the best/stronger fuel system cleaners on the retail market. The short version, it's your vehicle and your money, do what works for you. Over the life of vehicle ownership, we aren't talking about a lot of money if you amortize it. If you are still reading, thanks for hanging in there, been a little windy on this one. Then track every fill-up along with driving styles over a period of a year or two that data will only apply to those vehicles with those drivers though.but you get where I'm going. The only way to get empirical data with used cars is to use 2 identical cars and powertrains, send the injectors out and have them professionally cleaned, filter baskets replaced, and flow tested. ![]() That stuff gets on you hands if you do not wear gloves.Ĭlick to expand.This is one of the best/stronger fuel system cleaners on the retail market. I discard the innermost bag each fill.Īlso, I use disposable gloves. I store the graduated cylinder upside-down because the residue pulls moisture out of the air and creates a little fluid that collects in the multiple used plastic grocery bags. I do not know if that is true, but if it keeps the injectors clean, and lubes the expensive high pressure fuel pump, then in the long run it may pay for the cost of using it, and also keeps the vehicle more reliable. Some say the improvement in MPGs pays for the product. but it is an upper cylinder lube that reduces cylinder friction and therefore improves MPG. Red-Line SL-1 is not only a cleaner with a lot of P.E.A. ( The bottle use to say that the proper treatment dose for continuous use was 4.45 mL per gallon. Measure out that amount in a plastic 100 mL graduated cylinder and add that before each fill up. I multiply that by 4.45 to figure out how many mL of Red-Line SL-1 to add. I have the B trip set to automatically reset at each fill, and use the total miles of B divided by MPG to figure out how many gallons the fill up will require.
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