Use of Redex in fuel on bikes

I cant see how it can help ecconomy. The bike will spray (carb allow) a set amount of fuel in. Its a little like saying drinking 1L of bottle water will seem like drinking 1.2L of council pop. Know what I mean?

Still not sure if Red-x really does help! Would be interesting to see if YC has covered this sort of thing in his education. Hint hint nudge nidge YC

[johnnyrod]

Engines only run something like 25% efficient anyway so there is a fair scope for things running well or badly, so extra mpg or power can come from it running better - though odds are it wasn't really running well before so now he's seeing it running closer to normal. Redex is a detergent, and unless they've changed things, it's a mineral oil base, so it'll reduce octane number a little. Its main job is on the backs of the inlet valves, and to loosen stuff up in decoking. There are detergents in nearly any petrol that also aim to clean the inlet valves, plus other components in there such as corrosion inhibitors.

Originally Posted by ophic

Odd. In the tank in which its applied, it should normally reduce fuel efficiency slightly, as it doesn't burn so it weakens the fuel. In subsequent tanks you may see a benefit as the system is now cleaner.

last time i filled up i had done 175 miles from top to flashing petrol light. I decided to put Tesco SuperUnleaded in and my petrol light has started flashing today after 145 miles.

If this is true ophic and I fill her up with superunleaded again this time should i start getting more mpg as the 1st tank of superunleaded will have cleaned me engine of crud?

[Dave20046]

Originally Posted by FlyinCustard

last time i filled up i had done 175 miles from top to flashing petrol light. I decided to put Tesco SuperUnleaded in and my petrol light has started flashing today after 145 miles.

If this is true ophic and I fill her up with superunleaded again this time should i start getting more mpg as the 1st tank of superunleaded will have cleaned me engine of crud?

might take a few runs through to clean you engine

[ophic]

Originally Posted by FlyinCustard

last time i filled up i had done 175 miles from top to flashing petrol light. I decided to put Tesco SuperUnleaded in and my petrol light has started flashing today after 145 miles.

If this is true ophic and I fill her up with superunleaded again this time should i start getting more mpg as the 1st tank of superunleaded will have cleaned me engine of crud?

The statement is only true of redex. SuperUnleaded has more additives to clean your engine but these will be balanced with the fuel - so using SuperUnleaded should not reduce your fuel consumption at all. It may clean your engine a bit so you may see some small benefits - bit more power or mpg, although unless your engine is really running badly i doubt these would be noticeable. (Carb icing notwithstanding).

I did tests on Tesco, Shell, BP and Sainsburry fuel and in call the costs and mpg all evened out in the end so that nothing was better in the long run. Shell super was probably the best over all, BP had on average the highest prices.

If you feel like being bored then have a look at my Bikers View blog for all the figures

Originally Posted by Dave20046

might take a few runs through to clean you engine

ay be quiet nowt wrong wi my engine

I seam to think the exhaust note sounds a touch better, although i recon this could be me thinking i've put "better" fuel in so it makes my engine run better.

I think i'll continue to run it on super as when i did it with my car i did notice a difference so it must be better for it.

It's only about an extra 75p a tank

Originally Posted by Grinch

I did tests on Tesco, Shell, BP and Sainsburry fuel and in call the costs and mpg all evened out in the end so that nothing was better in the long run. Shell super was probably the best over all, BP had on average the highest prices.

If you feel like being bored then have a look at my Bikers View blog for all the figures

I read that a while back , it wasn`t boring , it just confirmed that it wasn`t worth worrying about and to just slap in whatever was available and enjoy the ride . I just use normal Shell as my daily slurpage for the bike .

[northwind]

I've used Redex as a lazy option when I knew the carbs needed a clean but could not be ****ed to do it. It's not very good, but it did put off the job for a while, which is all I asked of it really.

Originally Posted by ophic

The statement is only true of redex. SuperUnleaded has more additives to clean your engine but these will be balanced with the fuel - so using SuperUnleaded should not reduce your fuel consumption at all. It may clean your engine a bit so you may see some small benefits - bit more power or mpg, although unless your engine is really running badly i doubt these would be noticeable. (Carb icing notwithstanding).

+1
Redex is really old technology, if you can call it that all! I seriously doubt if anyone really need to decoke their engine these days....if you do then you probably have other problems that need sorting first.