Embarrasing-revelation on my Engine Carbon Build-up...too much use of high octane additives?.....

Bolo · 05-25-2005, 02:09 PM

So over lunchtime...my co-workers and I we're just discussing about cars. So I brought up my A4's recent fouled plugs and coilpack failures. I mentioned to them that I'm surprised this happened since I often treat my engine with different Octane booster additives almost once every other fill up just to give it some extra ooomph. .......They all went Ahaaa!!!.

My gearhead co-worker (he owns a restored Nova and Vette) lectured to me that them Octane booster additives often adds more carbon to the engine which causes fouled up plugs & burnt looking combustion chambers.... He said I've been throwing money away all these years adding that sh*t on my fuel tank while at the same time fouling up my CAT and possibly enhancing dangerous detonantion. He also jokingly tells me to forget tinkering with tiny 4bangers and get a real (V8) car next time...*sigh*

shadyraven · 05-25-2005, 02:47 PM

"So over lunchtime...my co-workers and I we're just discussing about cars."

Lucky guy, I work in an all female environment, this is never a topic of dicussion here. Only babies, shoes and gardens.

PuRe · 05-25-2005, 02:47 PM

PuRe · 05-25-2005, 02:51 PM

had that same problem in my first job out of school. All I ever used to hear was talk of weddings, babies, and diets. uggghhh so glad I got out of that gig.

Bolo · 05-25-2005, 02:51 PM

paulpas · 05-25-2005, 02:59 PM

Duh!

RageRacer · 05-25-2005, 03:32 PM

Mrkrad · 05-25-2005, 07:28 PM

running 10-30% toluene or up to 20% xylene will definitely burn much hotter than stock 93 gasoline. this can be a bad thing as much as it is a good thing.

dunno bout carbon fouling. that can be dealt with solvents sucked into the intake manifold.

nitrous does wonders on blowing carbon off as well. nice small 15-20shot dry probably would clean your pistons/valves/head lickety split

Rub-ISH (Brandon) · 05-25-2005, 08:30 PM

Mixture of toulene and the car got dogged by stock 1.8t jetta (with female Driver) Oh the shame hehe..

Did i neglect to mention that it was 90+ outside

bhvrdr · 05-26-2005, 05:09 AM

05-25-2005, 02:09 PM	#1
Bolo AudiWorld Senior Member Account #: 38085 Join Date: Jun 2002 Posts: 2,945	Embarrasing-revelation on my Engine Carbon Build-up...too much use of high octane additives?..... So over lunchtime...my co-workers and I we're just discussing about cars. So I brought up my A4's recent fouled plugs and coilpack failures. I mentioned to them that I'm surprised this happened since I often treat my engine with different Octane booster additives almost once every other fill up just to give it some extra ooomph. .......They all went Ahaaa!!!. My gearhead co-worker (he owns a restored Nova and Vette) lectured to me that them Octane booster additives often adds more carbon to the engine which causes fouled up plugs & burnt looking combustion chambers.... He said I've been throwing money away all these years adding that sht on my fuel tank while at the same time fouling up my CAT and possibly enhancing dangerous detonantion. He also jokingly tells me to forget tinkering with tiny 4bangers and get a real (V8) car next time...sigh* __________________ 02 A4 1.8T QTM (Brilliant Black) Engine: K04 Turbo w/ APR Program ,Bosch TT Injectors Audi Dual SideMount Intercooler(DSMIC)kit B5-S4 Wheel Liner (Intercooler) Vents Thermal R&D Catback Exhaust (Street) Neuspeed Torque Damper Stratmosphere/Hyperboost ByPassValve Carbonio (Ver.2)Intake System NS/Samco Xtreme Turbo Intake Hose APR-Throttle Body Hose Evoheatshield-phenolic I.manifold gasket Denso Iridium (IK22)sparkplugs Exterior mods: Zender front splitters w/ side intercooler scoops USP Trunk-Lip Spoiler Kerscher Sideskirts w/ S4 Door Blades Clear Corner-Headlight Mod Caractere Hood Grill/Custom Lower Mesh Grill Aspheric Side Mirrors w/ Chromed Housing Handling: 18 inch TSW "FLY" Rims w/ 235-40/18 Dunlop SP9000 Tires Neuspeed Sport Springs Bilstein Sport Dampers H&R:Front and Rear Anti-Swaybars PBR Ceramic Brake Pads Brembo Crossdrilled/Slotted Front Rotors Interior: Neuspeed Short Shifter w/ Momo shiftknob Onyx window Tint

05-25-2005, 02:47 PM	#2
shadyraven Senior Member Account #: 37283 Join Date: May 2002 Posts: 7,025	Re: Embarrasing-revelation on my Engine Carbon Build-up...too much use of high octane additives?.... "So over lunchtime...my co-workers and I we're just discussing about cars." Lucky guy, I work in an all female environment, this is never a topic of dicussion here. Only babies, shoes and gardens. __________________

05-25-2005, 02:47 PM	#3
PuRe Member Account #: 54173 Join Date: Apr 2003 Posts: 1,963	High octave additives (i.e Toulene? or i.e. STP Octane Booster-type?) __________________ Ghosts of AWOT past LOL

05-25-2005, 02:51 PM	#4
PuRe Member Account #: 54173 Join Date: Apr 2003 Posts: 1,963	Ha! I feel for you... had that same problem in my first job out of school. All I ever used to hear was talk of weddings, babies, and diets. uggghhh so glad I got out of that gig. __________________ Ghosts of AWOT past LOL

05-25-2005, 02:51 PM	#5
Bolo AudiWorld Senior Member Account #: 38085 Join Date: Jun 2002 Posts: 2,945	heh...I've been trying everything from 108 Racing additives.STP,Gumount..whatever is cheap that day. __________________ 02 A4 1.8T QTM (Brilliant Black) Engine: K04 Turbo w/ APR Program ,Bosch TT Injectors Audi Dual SideMount Intercooler(DSMIC)kit B5-S4 Wheel Liner (Intercooler) Vents Thermal R&D Catback Exhaust (Street) Neuspeed Torque Damper Stratmosphere/Hyperboost ByPassValve Carbonio (Ver.2)Intake System NS/Samco Xtreme Turbo Intake Hose APR-Throttle Body Hose Evoheatshield-phenolic I.manifold gasket Denso Iridium (IK22)sparkplugs Exterior mods: Zender front splitters w/ side intercooler scoops USP Trunk-Lip Spoiler Kerscher Sideskirts w/ S4 Door Blades Clear Corner-Headlight Mod Caractere Hood Grill/Custom Lower Mesh Grill Aspheric Side Mirrors w/ Chromed Housing Handling: 18 inch TSW "FLY" Rims w/ 235-40/18 Dunlop SP9000 Tires Neuspeed Sport Springs Bilstein Sport Dampers H&R:Front and Rear Anti-Swaybars PBR Ceramic Brake Pads Brembo Crossdrilled/Slotted Front Rotors Interior: Neuspeed Short Shifter w/ Momo shiftknob Onyx window Tint

05-25-2005, 02:59 PM	#6
paulpas Junior Member Account #: 48191 Join Date: Dec 2002 Posts: 978	Show them your bed and speak of these girly things... Duh! __________________ Thanks -Paul Pasika

05-25-2005, 03:32 PM	#7
RageRacer Junior Member Account #: 20195 Join Date: May 2001 Posts: 1,754	Wow....no husband/man bashing?

05-25-2005, 07:28 PM	#8
Mrkrad Member Account #: 90277 Join Date: Apr 2005 Posts: 2,334	increasing octane increases EGT temps running 10-30% toluene or up to 20% xylene will definitely burn much hotter than stock 93 gasoline. this can be a bad thing as much as it is a good thing. dunno bout carbon fouling. that can be dealt with solvents sucked into the intake manifold. nitrous does wonders on blowing carbon off as well. nice small 15-20shot dry probably would clean your pistons/valves/head lickety split

05-25-2005, 08:30 PM	#9
Rub-ISH (Brandon) Member Account #: 74799 Join Date: May 2004 Posts: 922	That is why my car sucked ass today...I was running about a 20% Mixture of toulene and the car got dogged by stock 1.8t jetta (with female Driver) Oh the shame hehe.. Did i neglect to mention that it was 90+ outside

05-26-2005, 05:09 AM	#10
bhvrdr Member Account #: 57072 Join Date: Jun 2003 Posts: 13,772	I think you mean it COOLS them, hence being able to run more timing with higher octane... __________________ Cheers! Mike ________________________________________ A4 S4 and RS4 Official Timeslip Databases MJB Motorsport Click for S4 at Play VIDEO!!! ________________________________________ Current vehicle: 2004 Audi S4, APR, Milltek, Bilstein, AP Racing. Over 323whp and 312tq on pump 93 13.20 at 103mph on pump 93 Past Project Vehicles: 2006 Audi A4 2.0t FSI with APR K04 Turbo 2003 Audi A4 1.8t with MTM Stage 3 2000 Audi A4 1.8t with MTM Stage 2 "There are only three sports: bullfighting, mountain climbing, and auto-racing. Everything else is just a game" -Ernest Hemingway

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