Boxster intercooler???....

[boostiality]

Originally Posted by pk2

So, I found a source for toluene, $16 per gallon. Any body have an equation or chart showing ratios of toulen to 91 gas to figure a target oct. number?

Regards, P

P

It's probably similar to the 91 to 100 octane chart. All they do is average out the number ratio. Unfortunately xylene and toluene have gone way up, they used to be 35-40 for a 5 gallon drum, but not anymore. The mixture I made is with 4 gallons of 100 and 1 gallon of xylene. Cost for me is $43.00 and the mixture adds up to 103.4xx octane. VP racing MS 109 is 103 octane but they charge $64.00 for a 5 gallon drum. If you look at the main ingredients you'll see ......... you guessed it Xylene


I'd love to use leaded gas like C16 but cats and o2 sensors are way too expensive on these cars.

[pk2]

Originally Posted by boostiality

P

It's probably similar to the 91 to 100 octane chart. All they do is average out the number ratio. ...The mixture I made is with 4 gallons of 100 and 1 gallon of xylene. Cost for me is $43.00 ... MS 109 is 103 octane but they charge $64.00 for a 5 gallon drum. If you look at the main ingredients you'll see ......... you guessed it Xylene


I'd love to use leaded gas like C16 but cats and o2 sensors are way too expensive on these cars.

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Ya it is just a ratio thing the equation is just ratio based on know outcomes of mixes ...I'll figure it out. I pay $8+ a gallon for 100. to get the minimum 93...If Toluene is double the price and at least double the strength, it's a bit more convenient. A little mental Calisthenics make me believe it might be a push, does sound though like you saved a few bucks

I read a couple really in depth articles on these additives, wish I could dig up the links. Theres lots of nuance. Toluene seems the pretty good because theres a lot in regular fuel anyways and, for what it's worth, the EU uses more than we do. So I guess it's pretty safe for their engines

Regards, PK

Found one http://www.offroaders.com/tech/octane.htm