L0WMK2 Posted January 1, 2007 Share Posted January 1, 2007 what fuel do you use in your car? anyone use mixes? and what addatives do you add if any (eg valvemaster) what recommendations does everyone have? Quote Link to comment Share on other sites More sharing options...
mk5corty Posted January 1, 2007 Share Posted January 1, 2007 96 or 98 with valvemaster, whether or not the valvemaster actually does anything, meh. Quote Link to comment Share on other sites More sharing options...
cute wee gem Posted January 1, 2007 Share Posted January 1, 2007 Use 91 with "Prestone 0 to 60" octane booster, apparently 96 comes into the country full of crap and is inconsistant whereas 91 HAS to come in under a law and will always be the same and is far better for your engine. Thats what some old BMW freak told me anyway, he uses that Prestone stuff and loves it, he says the rest of the octane boosters are shit. Reckons his BMW runs a million times better.. Before that he ran 96 with some avgas in each tank but got told off by the BMW dealer Quote Link to comment Share on other sites More sharing options...
cute wee gem Posted January 1, 2007 Share Posted January 1, 2007 ^^ I guess that only matters though if you are running high comp, else just run 91 with whatever other additives (valvemaster or what ever) Quote Link to comment Share on other sites More sharing options...
thminiman Posted January 2, 2007 Share Posted January 2, 2007 all nz fuels is crap, and comes with crap in it not just 91 i rock that bp ultra shit in the mini at the mo, altho that = seemed to be fucking with stuff a bit much, rock 96 with mooooreeys upper cylinder loob Quote Link to comment Share on other sites More sharing options...
CaMpylobacter Posted January 2, 2007 Share Posted January 2, 2007 me = alloy heads, so no dramas. run whatever although, peugeot gets it's ping on, even on 95 octane, at lowish rpm. the drawbacks of high compression and bosch injection systems. NZ fuel, as stated, is fucking shit. Has made for some decent times though, such as, BMW v8s not suffering form low sulphur fuel "nikasil" problems in the early 90s that's about it though. but yuh. I only ever run shit on premium. used to run the laurel on 91 but found that it dumped a fair but more in so in fact cost more to run it on that. hmm Quote Link to comment Share on other sites More sharing options...
L0WMK2 Posted January 2, 2007 Author Share Posted January 2, 2007 like i noticed the change from 96 to 95 but the fuel seems shit here for older cars? Quote Link to comment Share on other sites More sharing options...
thminiman Posted January 2, 2007 Share Posted January 2, 2007 its shit here for any cars the petro itself is 'dirty' if you will, nothing you add in will get rid of that, it will just counter it. If you keen on spending tonnes of money on petrol, run 98 from bp ultra for a couple of tanks, if the car feels and runs better, then keep running it on that, if you cant tell the difference or if your cars starts buzzing out to its shot of viagra then go back to 95, and run some form of cylinder lube or head cleaner in. this just means that all the shit stuff that is in the petrol goes out the exhaust pipe, rather than sticking to the valves, plugs and pistons, Quote Link to comment Share on other sites More sharing options...
CaMpylobacter Posted January 2, 2007 Share Posted January 2, 2007 tuning's alot of it too. if you're not getting a decent burn then carbon/shit deposits will build up fairly quickly. chucking a bit of avgas in there now and then seems to de-coke cars to no end. I also find that just running round town for a few days gives the crown a cunt of a time. carb needs messing with though. I'm lucky most of my running is open road, so the engine actually gets some decent combustion chamber temps rockin etc. italian tune ups ftw Quote Link to comment Share on other sites More sharing options...
Muzzie Posted January 2, 2007 Share Posted January 2, 2007 91 all the time. Will be doing some stints with avgas though, keep the seats coated with lead. Quote Link to comment Share on other sites More sharing options...
L0WMK2 Posted January 2, 2007 Author Share Posted January 2, 2007 so would 98 be ok for older cars? what about racegas - 100 octane? what about fuel mixes does anyone run a mix? so its a good idea to run something like valvemaster? Quote Link to comment Share on other sites More sharing options...
Muzzie Posted January 2, 2007 Share Posted January 2, 2007 so would 98 be ok for older cars? what about racegas - 100 octane? what about fuel mixes does anyone run a mix? so its a good idea to run something like valvemaster? Old mechanic friend of mine said not to bother, and just run some avgas through it every now and then keep the valve seats coated lightly with lead. Quote Link to comment Share on other sites More sharing options...
lowlancer Posted January 3, 2007 Share Posted January 3, 2007 98 is only decent gas we get Everyhting else=archaic Quote Link to comment Share on other sites More sharing options...
Guest kornstar Posted January 3, 2007 Share Posted January 3, 2007 i use 98 for the turbd mitsi normally use 96 with valvemaster for teh mini. might go to 98 once shes up and running properly. Valvemaster is just kereosene right? Quote Link to comment Share on other sites More sharing options...
sholdowa Posted January 3, 2007 Share Posted January 3, 2007 Old mechanic friend of mine said not to bother, and just run some avgas through it every now and then keep the valve seats coated lightly with lead. Are you sure it does this? Tetraethyl lead is primarity an octane booster, not a lubricant. Quote Link to comment Share on other sites More sharing options...
Muzzie Posted January 3, 2007 Share Posted January 3, 2007 Old mechanic friend of mine said not to bother, and just run some avgas through it every now and then keep the valve seats coated lightly with lead. Are you sure it does this? Tetraethyl lead is primarity an octane booster, not a lubricant. Nup I'm not - but since my mechanic friend has been in the trade something stupid like 40 years, does the announcing for Pukekohe Race track alot, and as a result gets to tinker with some interesting cars and get cheap av gas and etc etc etc etc. You get the pictute? I think I'm more than likely inclined to believe him. Quote Link to comment Share on other sites More sharing options...
rxsumo Posted January 3, 2007 Share Posted January 3, 2007 While lead was used for boosting octane, it was also used as a lubricant for "soft" valve seats. The use of valvemaster in my opinion is a waste of time (and money), as generally the older cars dont do enough mileage to see valve seat recession before actually needing other head work...gaskets...worn valve guides etc. Basically we get 3 types of gas from the "big" gas chains....91, 95 and BP Ultimate 98. The Mobil high octane gas is a boosted 95. Avgas or Racing 100, is an aircraft fuel that cant be measured using the RON scale. It would be somewhere between 115 and 130 if it there was a measurement that high. Avgas has a shelf life as an Aircraft Fuel, and once its past its use by date, its canned up into Race Fuel. I would be careful using Avgas in a car that sits for a while. Avgas is fairly Hydroscopic (absorbs water), and will cause corrosion it lets for extended lengths of time in the tank/fuel system. Its also illegal to run Avgas on the road, and unless you can prove that the Avgas is "residual" from when you have been racing/rallying, you might find yourselves in the poo. The Police may book you for it. The fuel that is sold in NZ has a couple of different "weights" which is why in a old school car with carbies you might find that an octane boosted 91 may make your car run better that running 95/98. The fuel companies sset the fuel up for the "average" car being run in the fleet. The cars that generally run 91 are "budget" cars or commercials that in a lot of cases run carbies, late model higher performance cars the require the higher octane fuels are fuel injected, so the higher octane fuels are weighted lighter to work better in the fuel injectors. The NZ fuel isnt generally "crap"....at least you can buy Premium Gas at nearly every Service Station in the Country....try buy Premium Gas once you get out of the main cities in Oz....we did a circuit of Victoria a few years back, and trying to find gas to put in the Volvo Turbo we were driving was "interesting". I tend towards BP gas because the gas in my opinion is more stable in its Supply. If you buy BP, Shell, Mobil or Caltex gas, generally it comes from 1 of 2 sources Marsden Point or BP's Plant in Western Australia...and who gets what is determined by what sort of port you have (except for Auckland that gets its fuel pipe directly from Marsden Point). If anybody is interested ....I can give you the rundown on why this "crap" gas affects rubber hoses as well........ Quote Link to comment Share on other sites More sharing options...
Gaz Posted January 3, 2007 Share Posted January 3, 2007 I thought all our gas was from Marsden Point. Must not be tho as Marsden doesnt make 98. I ran 98 in my high comp engine but it wasnt enough, was going to try adding a bit of avgas but never got around to it. I still run 98 with the standard head back on now as it seems to run alot better and can take a tad more advance than with 95/96. Id say you should never run 91 in the pinto as it will detonate unless retarded. I use valvemaster to every 20l or 20$. I figure its only $1.50ish so why not try and protect your head for that much. Especially if youve had a head reworked or new valves etc. Quote Link to comment Share on other sites More sharing options...
Guest kornstar Posted January 3, 2007 Share Posted January 3, 2007 and im sure repco sell an alternative to valvemaster in bigger quantities, = cheaper. Just add a capfull when u get home etc no? Quote Link to comment Share on other sites More sharing options...
CaMpylobacter Posted January 3, 2007 Share Posted January 3, 2007 marsden point doesn't supply much. alot comes into new plymouth ports I understand. ever seen those big cunting tank farms in port towns etc? them = stockpiles Quote Link to comment Share on other sites More sharing options...
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