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after seeing this: Fifth GearI'm wondering if this redex stuff is worth it, and is there any chances of adverse effects etc? other than a wasted fiver? |
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I've always wanted to see that done, before and after power runs with Redex. For a fiver it seems you can't go wrong!
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I've got Rovers.
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adam73bgt
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Redex Injector Cleaneradam73bgt
@adam73bgt
Club Retro Rides Member 58
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Damn that worked out as an expensive service in the video! I tend to just run a tank of super unleaded through now and then as it does pretty much the same job for not a huge amount more than filling with standard  |
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I remember the days with redex when they advised that it directly in the cylinder bores through the spark plug holes. when you started the engine afterwards it the car would disappear in a smoke screen, on a couple of occasions neighbours thought I'd blown the engine when I drove it away to burn off the redex
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Rich
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Redex Injector CleanerRich
@foxmcintyre
Club Retro Rides Member 160
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Damn that worked out as an expensive service in the video! I tend to just run a tank of super unleaded through now and then as it does pretty much the same job for not a huge amount more than filling with standard Err, you should be running the MG on super unleaded all the time if you want the best from it, it was built to run on 4 star 100 RON.. |
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adam73bgt
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Redex Injector Cleaneradam73bgt
@adam73bgt
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Damn that worked out as an expensive service in the video! I tend to just run a tank of super unleaded through now and then as it does pretty much the same job for not a huge amount more than filling with standard Err, you should be running the MG on super unleaded all the time if you want the best from it, it was built to run on 4 star 100 RON.. I do try and run it on the tesco momentum 99 stuff most of the time tbh, its only when I'm getting very low that i put some standard stuff in there, though the manual says the low compression cars should be fine down to 93 RON, though I have a feeling mine isn't one of those.. |
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Rich
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Redex Injector CleanerRich
@foxmcintyre
Club Retro Rides Member 160
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Dec 11, 2013 10:23:07 GMT
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Err, you should be running the MG on super unleaded all the time if you want the best from it, it was built to run on 4 star 100 RON.. I do try and run it on the tesco momentum 99 stuff most of the time tbh, its only when I'm getting very low that i put some standard stuff in there, though the manual says the low compression cars should be fine down to 93 RON, though I have a feeling mine isn't one of those.. Yea, it won't be happiest on anything low octane. That tesco stuff isn't supposed to be that good either, ours only ever gets VPower and and castrol valve master plus, I tend to err on the safe side of caution given the way I drive the thing. No real chance of it needing redex at least  |
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adam73bgt
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Redex Injector Cleaneradam73bgt
@adam73bgt
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Dec 11, 2013 10:32:03 GMT
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I do try and run it on the tesco momentum 99 stuff most of the time tbh, its only when I'm getting very low that i put some standard stuff in there, though the manual says the low compression cars should be fine down to 93 RON, though I have a feeling mine isn't one of those.. Yea, it won't be happiest on anything low octane. That tesco stuff isn't supposed to be that good either, ours only ever gets VPower and and castrol valve master plus, I tend to err on the safe side of caution given the way I drive the thing. No real chance of it needing redex at least Ah yeah valvemaster.... not used any of that for a while  I tend to be the go to guy when theres a split bottle of redex at work that needs disposing of so I'm pretty sure I could eat my dinner off the fuel system in my car  |
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Rich
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Redex Injector CleanerRich
@foxmcintyre
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Dec 11, 2013 11:49:12 GMT
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Yea, it won't be happiest on anything low octane. That tesco stuff isn't supposed to be that good either, ours only ever gets VPower and and castrol valve master plus, I tend to err on the safe side of caution given the way I drive the thing. No real chance of it needing redex at least Ah yeah valvemaster.... not used any of that for a while I tend to be the go to guy when theres a split bottle of redex at work that needs disposing of so I'm pretty sure I could eat my dinner off the fuel system in my car If you haven't got a unleaded head fitted you want to be using some kind of lead substitute additive! VSR FTL! |
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PHUQ
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Dec 11, 2013 12:25:06 GMT
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Go faster fuel and you and your lardy great mgb still couldn't lose me on the back streets of Bristol, I dunno  You definitely want to be using an additive, B serieses are pretty susceptible to valve seat recession I believe. |
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Dec 11, 2013 12:49:18 GMT
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High octane fuel doesn't give any increase in power. It resists combustion better so is ideally suited to high compression engines.
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Rich
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Redex Injector CleanerRich
@foxmcintyre
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Dec 11, 2013 13:14:13 GMT
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High octane fuel doesn't give any increase in power. It resists combustion better so is ideally suited to high compression engines. I don't treat it as a miracle go faster, I use it because I can't get 4 star which is what the engine is designed to run on. Yes, it can be tuned for 95RON but it doesn't run as well so I use 99+valve master plus and tune it to run on that |
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Dec 11, 2013 13:32:40 GMT
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The only super unleaded that is actually refined to its higher octane rating is Shell's V-Power. All the rest are simply standard 95 with an octane booster added.
Shell are also really picky about the tanker delivering V-Power so there can be no contamination.
One of my pals is the Scottish area sales guy for Esso. He says V-Power is the best fuel on the market.
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High octane fuel doesn't give any increase in power. It resists combustion better so is ideally suited to high compression engines. I don't treat it as a miracle go faster, I use it because I can't get 4 star which is what the engine is designed to run on. Yes, it can be tuned for 95RON but it doesn't run as well so I use 99+valve master plus and tune it to run on that I know, was just giving my limited knowledge on the subject. |
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PHUQ
Part of things
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Dec 12, 2013 10:00:12 GMT
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Surely it will give a slight increase in power on a car designed to run on fuel of that quality though? Or more accurately I suppose, running lower octane fuel in a car designed and set up for higher octane fuel will give a slight decrease in power output as you are less likely to get complete combustion.
Could be wrong, I'm more of a diesel man, but I can't see how it'd work any other way. What it won't do of course is magically increase the power of a car designed to run on lower octane fuel.
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Dec 12, 2013 10:40:12 GMT
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Dec 12, 2013 11:04:56 GMT
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I used to use redex but now use cataclean, it brought emissions down enough to squeeze through an MOT so have stuck to that since. On my diesel I used 10K power boost from halfords, seemed to work well. I remember those days as well, disappearing in a cloud of smoke! On super unleaded, I use V power in the Lexus. It was designed to run on it and is a smoother. To be honest for the miles I do the cost difference isn't that bad. At approx 7.5p per litre different its only about £6 per tank. I can get over 300 miles from a tank so not too bad really. Fifth gear tested fuel as well: fifth gear test no1
fifth gear test no2 |
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ChasR
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Redex Injector CleanerChasR
@chasr
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Dec 12, 2013 13:14:41 GMT
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Instead of using those stop smokes etc. I tend to chuck in posher fuel, sometimes with no benefit, and at others with a tangible benefit. High octane fuel doesn't give any increase in power. It resists combustion better so is ideally suited to high compression engines. You also forgot forced induction cars, where higher octane fuels will be more resistant to knock. High octane fuel doesn't give any increase in power. It resists combustion better so is ideally suited to high compression engines. I don't treat it as a miracle go faster, I use it because I can't get 4 star which is what the engine is designed to run on. Yes, it can be tuned for 95RON but it doesn't run as well so I use 99+valve master plus and tune it to run on that My B seemed to run better on V-Power. Maybe it was a coincidence but setup to run on V-Power it would stop dieseling. The Stag seems to be happy on most things My 944 needs to run on V-Power. Besides it being slightly cheaper to run (the best tank I ever had out of that was £19 to 100 miles on V-Power) it tends to pre detonate on 95 :Probably down to the chips it has). The shocker here was my B6 Passat PD TDI 105. When I had the engine sorted it was not costly on diesel. On V-Power it definitely had more go about it (something others noticed when driving it) in addition to it being cheaper to run (on diesel I would see around £14-16 to 100 miles, on V-Power diesel it was more liek £12; We did the tests again just to make sure we had not fudged things up!). That for us made it not only the cheapest diesel family car we had owned (a 407 HDI, 306 DT, MkIV Mondeo 2.0 could not come close) but also a very cheap car on fuel full stop (a Renault Kangoo 1.5 DCi would be on par unless you hit a motorway where the Kangoo's MPG would plummet crusing at 75MPH). What is strange with the Passat is that VW tell you not to run the car on biofuel if possible or with diesel that has a 10% content or more of biofuel (I believe pump diesel (bar V-Power) is getting quite close to that margin now). So much so that if you do VW say to slash the fuel filter change intervals from 30,000 miles to 7,500 miles.... Go faster fuel and you and your lardy great mgb still couldn't lose me on the back streets of Bristol, I dunno You definitely want to be using an additive, B serieses are pretty susceptible to valve seat recession I believe. It is a good job they are not massively expensive to convert to unleaded (or at least it was not for me many moons ago). |
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Last Edit: Dec 12, 2013 13:18:04 GMT by ChasR
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bortaf
Posted a lot
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Dec 12, 2013 13:15:53 GMT
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Pah you could get the sort of powrer increase simply by testing the car at a differant time of day, especialy when the test is run outside! ambiant air makes a lot of differance which is why "decent" rolling roads are in an enclosed cell with as near to a constant air temp as possable, blimey i once gained 15 BHP cos the RR was near a river and we tested it early morning in the summer, by the afternoos i'd lost it all again.
No idea about power but i've squeezed loads of cars through and MOT retest by adding injector cleaner and running them about for a few miles/day so yes some do work.
The reason you don't pour redex into the cylinders anymore is cos fuel injected cars don't produce anywhere the same amount of coke build up in the CC, now they deposit it in the inlet manifold, well diesels/EGR equipedcars do anyway (and worse than any carbed car ever managed to do in the CC) ah progress, gotta love it) lol
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R.I.P photobucket
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ChasR
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Redex Injector CleanerChasR
@chasr
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Dec 12, 2013 13:20:35 GMT
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The Passat was a work vehicle used for the same kind of work in the same conditions . Maybe Unit Injector cars tend to favour 'cleaner' diesel, but who knows? I was not convinced by such fuels until that car. Saying that, the V6 Mondeo seems to behave the same on any fuel! |
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I tend to be the go to guy when theres a split bottle of redex at work that needs disposing of so I'm pretty sure I could eat my dinner off the fuel system in my car 
