Posted 15 January 2002 - 09:25 AM
I've tried 104+ (black bottle one) and took my brick to the track with it. Power gains cannot feel but no detonations/pinging and engine runs smoothly and strongly. Problem was my tranny was overheating first, bummer
I'm in GMT -5:00 time zone
Posted 15 January 2002 - 10:45 AM
Redex - the price of this REALLY varies , cheapest from some shop in serangoon area.
STP - octane booster about 5 dollars per bottle.
f2-21 - i get it free. the importer is my neighbour. it works. but expensive lah 15 per bottle. however not bad results and no need to add so much.
magdaco mag kreen - works too.
Notra Bene : for me works means fuel consumption improves with all things being equal. i.e. same driving pattern.
seems to me that snake oils mostly don't work. octane boosters, fuel additives usually do the trick + they are about 1/10 the price, on avg of the snake oils. hehe.
anyway for u guys out there that try and try stuff, results sometimes are psychological, some do improve, some become worse etc. so really if u wanna try snake oils the bottom line is : ITS UP TO U :)
Posted 15 January 2002 - 03:26 PM
Read in other groups tat it blends well with our gas (same hydrocarbon family)
has octane of 114 by itself & by adding 7-8% (2-3 ltrs) into the gas before using RON98 can boost octance of up to 100. Costs only S$2/ltr so not too expensive.
Subaru Australia also replied to the Liberty B4 group that they recognise that but not for other octane boosters to avoid warranty on the RSKs.
Also note most of the octance boosters thingy are actually contains mainly petroluem
distillates (smells like kerosene?).
Posted 15 January 2002 - 03:42 PM
$2/- a litre still more ex than petrol itself.......will adding something like Mexon F2-21 at $3 per tankful be more cost efficient then? Mexon claims to increase octane as well.
Too bad we don't have RON100 like Japan at petrol stations.
I'm in GMT -5:00 time zone
Posted 15 January 2002 - 04:57 PM
Trying to do this as project but fren in the chemical line
still have not got the toulene for me.
Works well but the problem is storage as this liquid very volatile.
Tried STp & showed better throttle & smoothness but not for power.
Is Mexon good as I am also trying other means to meet the car specs for 100RON.
In Japan got 114RON...waaahh!
Still onto the broquet thingy but cannot bear to x'periment with $420 for testing leh..how lah!
Posted 15 January 2002 - 05:12 PM
I'm in GMT -5:00 time zone
Posted 15 January 2002 - 05:21 PM
From our beer talk last time, I remembered your toulene formula. Just worried about melting spark plugs or injectors... Have you tried on your Black Beast yet?
Posted 15 January 2002 - 05:41 PM
The feedback I got was it gets a bit more difficult esp for cold starts but after tat no problem leh. With 7-8% shud be no problem, unless you wanna to add 50% into yr tank then kena melt down everything!
See my posting at SSC on some tech write-up by others, see below for those int. :-
Now to answer your questions regarding the use of octane boosting additives: -
Advice from the manufacturer of Subaru Vehicles concerning octane boosting additives is as follows: -
· There are only three methods of increasing the octane rating of commercially available fuel know to our engineers and they are: -
Ø Manganese or Lead
Ø Toluene or Methyl Benzene
· Manganese or lead will result in spark plug, catalyst and or Oxygen sensor failure. Subaru has tested several brands of ‘octane boosters’ and all have been found to contain either manganese or lead as the octane-boosting agent and therefore they are not recommended.
· Methanol requires large quantities to raise the octane rating (up to 50%). It is very toxic substance that requires handling with great care. Large concentrations will also damage fuel system components normally designed for petrol use only. The use of Methanol is therefore not recommended.
· Toluene or Methyl Benzene has an approximate RON of 120 and therefore approximately 10% by volume is require to raise the octane rating from 92 RON to 95 RON or from 95RON to 98 RON. Toluene is considered by Subaru engineers to be the only acceptable method of increasing octane ratings of commercially available petrol. They have warned however that no more than 10% by volume should be used and that cold start performance may be effected.
· Handling, storage and or cartage of toluene must comply with regulatory and manufacturers requirements. Subaru does not recommend that customers carry or transport toluene in the boot of their car for use when the required minimum octane fuel is not available."
See url :- http://www.dsm.org/archives/1996/04/19960425.txt/8.html
Thot you brothers may be interested to read this further abt toulene
as octance booster. So far anyone tried this?
Octane ratings can be very easily calculated by simple averaging. For example, the tank of an Audi A4 1.8TQ is 15.6 gallons. Filling it with 14.6 gallons of 92 octane and 1 gallon of toluene (114 octane) will yield a fuel mix of:
(14.6 * 92) + (1 * 114) / 15.6 = 93.4
The Audi A4 1.8T is a good example of a car that has very high octane needs if it has been modified to produce more turbo boost. The base compression ratio of this car is a very high 9.5:1 and when an additional 1 bar (14.7 psi) of turbo boost is applied on top of it, the resulting effective compression ratio is way beyond what 92 or 93 octane fuel can ever hope to cope with. Most modified 1.8Ts running without octane enhancement are running with severely retarded ignition timing and boost.
See more url :-
0 user(s) are reading this topic
0 members, 0 guests, 0 anonymous users