Heptane ( a 7 carbon chain ) and Octane ( an 8 carbon chain ) are no longer the only ingredients in gasoline.

Used to be 87 Octane gas was: 87% Octane and 13% Heptane to make your 100%. Now there are more complex chains and other additives to the mix.

Funny how a 7 carbon chain like Heptane will ignite with such ease and the 8 carbon Octane is so difficult.

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1987 300TD ( under resto )
1987 300E SOLD
1987 300D
1993 400E
1997 Dodge/Cummins 3500
2004 E320 Wagon SOLD
2006 BMW M5 Yes, they will go 204 MPH SOLD
2008 BMW 535i SOLD (POS)
2011 BMW X5 Diesel
2013 X5M Tuned to 700+ HP Stupid Fast SOLD
2016 Nissan Titan XD Cummins 5.0!
2004 Audi Quattro ( track car ) AutoX machine
2010 BMW 328i ( sometimes track, but the Audi is faster )


I own maybe 100 t-shirts and they all smell like Diesel fuel and test oil......