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#2
09-09-2010, 02:54 AM
Hummer Professional
Join Date: Aug 2007
Location: Bartlett, Illinois
Posts: 486
Re: premium unleaded
Quote:
Originally Posted by Z06RB
My 09 H2 manual recommends that premium be used. The engine on the H2 was changed in 08.
I notice quite the difference using premium in the 2008, noticed nothing when I ran it in the 2006
__________________
2008 H2 SUV Luxury: Solar Flare ext/Black int
SOLD 2006 H2 SUV Luxury: Pewter ext/Black int.
2002 Corvette Z06 Blue/Ebony (light mods)
1/4 mile: 11.661@118.86
2013 Audi S4
2002 Yamaha YZF R1 Blue/White
1/4 mile: 10.51@136
2006 Sea-Doo RXP (70.6mph GPS)
2005 Sea-Doo RXT
#4
09-09-2010, 05:54 AM
Hummer Professional
Join Date: Feb 2004
Location: Annapolis, MD USA
Posts: 365
Re: premium unleaded
The 6.2L has a compression ratio of 10.5:1 vs the 6.0L which has a 9.4:1 ratio so I can understand why the newer trucks recommend premium fuel.
I am happy
I can run on regular because it is $.30 more per gallon for premium now! That would be almost $10 more per fillup.
#5
09-10-2010, 12:32 AM
Hummer Expert
Join Date: Feb 2009
Location: Nashville, TN
Posts: 887
Re: premium unleaded
Quote:
Originally Posted by mbdougl
The 6.2L has a compression ratio of 10.5:1 vs the 6.0L which has a 9.4:1 ratio so I can understand why the newer trucks recommend premium fuel.
I am happy I can run on regular because it is $.30 more per gallon for premium now! That would be almost $10 more per fillup.
....what he said....
__________________
2003 Black H2:
Blacked out,7" lift,40" Pitbull Rockers, 20x12 Fuel Octanes and lots of more junk, DemonGuard Brushguard
2006 Blue H2:
20x12 black Rockstars & 35"s. missed.
2005 Black Mustang Roush Stage 1 #05-1058:
Showcar, Procharged 580HP, 20" Gianelle's, Prokit, 1/8 in 7.56secs.
2009 Silver Cadillac CTS Premium
White interior, lots of future mods.
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