Clarkey Posted October 14, 2009 Report Share Posted October 14, 2009 Ladds This has probably been done to death, Do many of you use super unleaded rather then normal unleaded(bear with me).If you use normal unleaded I take it you use an additive with an octain boost as well as lead replacement. and with the super do you just use the lead replacement additive. Don't know if you are aware but with the bio-fuels now being released with all oil companies the normal ul95 will have 5% bio-ethanol in it. but super unleaded will not have the ethanol in. back to the additives is the castrol one a good bet Quote Link to post Share on other sites
88V8 Posted October 14, 2009 Report Share Posted October 14, 2009 Not all super unleaded is created equal. Best, V-Power (99). After that for me BP Ultimate. I never use 95. 95 is no good for a UK injection car. Castrol Valvemaster additive. Was using without boost, more recently with. Has your engine got unleaded seats? Mine not. Didn't know that Super is not going to be adulterated with bio-****. That's good news. Ivor Quote Link to post Share on other sites
peejay4A Posted October 14, 2009 Report Share Posted October 14, 2009 (edited) BP Ultimate unleaded is my choice. I don't use an additive now. I used VSP for a while and convinced myself that it made the exhaust fumes give me a headache. I stopped using the additive and the problem went away. Probably just me being a bit weird though... Edited October 14, 2009 by HPA 510K Quote Link to post Share on other sites
Guest ntc Posted October 14, 2009 Report Share Posted October 14, 2009 LaddsThis has probably been done to death, Do many of you use super unleaded rather then normal unleaded(bear with me).If you use normal unleaded I take it you use an additive with an octain boost as well as lead replacement. and with the super do you just use the lead replacement additive. Don't know if you are aware but with the bio-fuels now being released with all oil companies the normal ul95 will have 5% bio-ethanol in it. but super unleaded will not have the ethanol in. back to the additives is the castrol one a good bet In France it is now 10% Quote Link to post Share on other sites
Pogo Posted October 14, 2009 Report Share Posted October 14, 2009 I used to use our local Sainsburys Super unleaded up until June this year. I took advice from the Forum - never use supermarket fuel in the TR6. I now use Shell V-Power Super Unleaded. No additive. My car runs great and I even got 29+ mpg for my run down to Malvern this year. My car has an unleaded head. Roger Quote Link to post Share on other sites
nickthepedal Posted October 14, 2009 Report Share Posted October 14, 2009 LaddsThis has probably been done to death, Do many of you use super unleaded rather then normal unleaded(bear with me).If you use normal unleaded I take it you use an additive with an octain boost as well as lead replacement. and with the super do you just use the lead replacement additive. Don't know if you are aware but with the bio-fuels now being released with all oil companies the normal ul95 will have 5% bio-ethanol in it. but super unleaded will not have the ethanol in. back to the additives is the castrol one a good bet The Yellow Peril loves a tank of Shell V Power and a bottle of Millers VSP. Not the cheapest option, but the car runs much better on this combination. Have tried other high octane fuels, and the car does not feel or sound so happy . Could be my imagination, but i am happy and so is the car. Cheers. Nick. Quote Link to post Share on other sites
Clarkey Posted October 15, 2009 Author Report Share Posted October 15, 2009 Not all super unleaded is created equal. Best, V-Power (99). After that for me BP Ultimate.I never use 95. 95 is no good for a UK injection car. Castrol Valvemaster additive. Was using without boost, more recently with. Has your engine got unleaded seats? Mine not. Didn't know that Super is not going to be adulterated with bio-****. That's good news. Ivor Hi Ivor Thankfully the through put of super unleaded is a lot lot less than regular 95, the companies reach there government limits by what they sell on 95 and diesel so they do not need to mess with the super Quote Link to post Share on other sites
Clarkey Posted October 15, 2009 Author Report Share Posted October 15, 2009 I used to use our local Sainsburys Super unleaded up until June this year. I took advice from the Forum - never use supermarket fuel in the TR6. I now use Shell V-Power Super Unleaded. No additive. My car runs great and I even got 29+ mpg for my run down to Malvern this year. My car has an unleaded head. Roger No Unleaded head for me i'm affraid Quote Link to post Share on other sites
88V8 Posted October 15, 2009 Report Share Posted October 15, 2009 (edited) No Unleaded head for me i'm afraid That's OK. Unleaded seats can fall out. So that's six less things to worry about. Ivor Edited October 15, 2009 by 88V8 Quote Link to post Share on other sites
Les Pettitt Posted October 15, 2009 Report Share Posted October 15, 2009 Hi Martin, BP Ultimate or Shell V Power for me also. I do not have an unleaded head but I no longer use an additive. I did try Castrol Valvemaster Plus for a while but I found that the Bosch pre filter kept clogging every few hundred miles with a very, very fine sand coloured dust. The problem has gone away since I stoppped using an additive. After discussion with Malcolm of Prestige who fitted my pump he advised that with my type of motoring (lowish annual mileage and no motorway use) I would probably not need to use an additive. I check for valve seat recession but there has been absolutely none so far. Regards Les Quote Link to post Share on other sites
Lee Sellars Posted October 15, 2009 Report Share Posted October 15, 2009 Hello Chaps Can you explain why The PI wont run on 95. I am haveing my Engine rebuilt at the moment and i am asured that it will run on 95. You have me worried Now Lee Quote Link to post Share on other sites
Alec Pringle Posted October 15, 2009 Report Share Posted October 15, 2009 Hi Lee, the Triumph PI engine was designed to run on 100-101 octane/5 star petrol. It wasn't and isn't ever going to be happy on 95 octane/3 star. 98-99 octane/4 star is as low as it goes, and even that will probably need some attention to Triumph's original timing recommendations. Hence many owners, especially if their engines are at all tuned, prefer to use V-Max or similar plus octane enhancer - bringing the effective octane rating up to 100-102. Talking RON measurement of course. Cheers, Alec Quote Link to post Share on other sites
Mike Collins Posted October 15, 2009 Report Share Posted October 15, 2009 Mine runs on 95 if it has to, the ignition has to be retarded to stop it pinking so a bit less power probably. Mike. Quote Link to post Share on other sites
Kevin Warrington Posted October 15, 2009 Report Share Posted October 15, 2009 Mine only gets Shell V-max (or whatever it is called this week) and a dash of VSP if I'm doing a long fast run. I've not been happy with the BP super unleaded, or Esso. Mine particularly does not like the Esso mix, but the Tesco super unleaded seems fine. The best ever was in Greece where Shell sell genuine 100 Octane fuel. I'm sure we've discussed this before and someone suggested that theres no difference between brands. I have to admit that living not too far from a large refinery( Fawley) and oil terminal (Hamble), we see lots of tankers in what you might think to be the wrong livery heading away from both. So maybe it is all in the imagination? Kevin Quote Link to post Share on other sites
jemgee Posted October 16, 2009 Report Share Posted October 16, 2009 I used to use unleaded with Castrol valvemaster plus (bought a few bottles cheap at tatton show in 2005). I was persuaded to try a fill up with Shell V+ or optimax. No contest and it saves paying through the nose at halfrauds for the additive which is now a ridiculous price. I seem to remember a Fifth gear test of unleaded, BP ultima and Shell v max and when used in higher performance engines the V max gave the best results. Quote Link to post Share on other sites
JJohn Posted October 16, 2009 Report Share Posted October 16, 2009 LaddsThis has probably been done to death, Do many of you use super unleaded rather then normal unleaded(bear with me).If you use normal unleaded I take it you use an additive with an octain boost as well as lead replacement. and with the super do you just use the lead replacement additive. Don't know if you are aware but with the bio-fuels now being released with all oil companies the normal ul95 will have 5% bio-ethanol in it. but super unleaded will not have the ethanol in. back to the additives is the castrol one a good bet My engine, a 125 with a 150 cam and SU's, definitely likes Shell V-Power the best. I use Castrol Valvemaster Plus as the head has not had uthe valve seats changed. A change to anything else, including BP Ultimate, results in running-on and a noticeable loss in the sharpness of response. I first discovered V-Power in Germany and Austria 5 years ago, where it is the full 100 octane. The difference compared with what I had been using was a revelation. Jim Quote Link to post Share on other sites
OLDMAN Posted October 16, 2009 Report Share Posted October 16, 2009 I have used Tetraboost for a number of years on Jauars ,Corvettes, Austin Healys and Triumphs. Its not a substitute it is lead and you can also control your octane, up to 106 octane can be made if required. Why bother with phosphorous, maganese,sodium and potassium when you can have lead that woked well for 70 odd years. Derek Quote Link to post Share on other sites
Andy Moltu Posted October 20, 2009 Report Share Posted October 20, 2009 A lot of cars pink, not because of the fuel but because their dizzy springs are sloppy - the loop at the end that goes over the post tends to go slack allowing more timing scatter - thus making it harder to set the timing. I remain to be convinced that regular unleaded is the equivalent of old three star fuel & suspect that the 95 octane rating is essentially a minimum that most comfortably exceed. I have it on good authority that at one time all BP unleaded was over 98 octane & the return of Super Unleaded was a marketing ploy to avoid loosing out to Shell (who make a big noise about their super fuels). It could well be the same is being done by many fuel companies - if the cost of making 98 octane is barely different to making 95 octane then there is little commercial argument to blending & distributing 2 fuels - simply brand the same fuel twice and sell it at a higher profit margin for the super brand. Quote Link to post Share on other sites
88V8 Posted October 20, 2009 Report Share Posted October 20, 2009 I have used Tetraboost for a number of years on Jauars ,Corvettes, Austin Healys and Triumphs. Its not a substitute it is lead and you can also control your octane, up to 106 octane can be made if required. Why bother with phosphorous, maganese,sodium and potassium when you can have lead that woked well for 70 odd years. Is this the same as Tetralead? It seems jolly pricey. Although presumably it avoids any need for unleaded seats, because it maintains the lead memory? Ivor Quote Link to post Share on other sites
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