Gas Mileage
Platinum Member
Joined: 05-09-2006
Posts: 6,805
From: "Upland" Mesa, Arizona
Solman.....
I'll defer to ChevyMgr. But I think who ever told you about an "external" fuel filter, may be a little confused. Try and buy one. No part number is listed and the GM parts counter people say.....permanant with fuel pump. But they could be wrong, I suppose.
Read entries in this link...especially those by ChevyMgr, who I would think, would know......but you can also read his quote in his signature.
https://www.chevyhhr.net/forums/show...ht=fuel+filter
We also have discussed this many times related to the maintenance package deals some shops provide. It parallels "Power steering flush".....
I'll defer to ChevyMgr. But I think who ever told you about an "external" fuel filter, may be a little confused. Try and buy one. No part number is listed and the GM parts counter people say.....permanant with fuel pump. But they could be wrong, I suppose.
Read entries in this link...especially those by ChevyMgr, who I would think, would know......but you can also read his quote in his signature.
https://www.chevyhhr.net/forums/show...ht=fuel+filter
We also have discussed this many times related to the maintenance package deals some shops provide. It parallels "Power steering flush".....
Senior Member
Joined: 07-17-2006
Posts: 6,053
From: Dallas, GA
Solman.....
I'll defer to ChevyMgr. But I think who ever told you about an "external" fuel filter, may be a little confused. Try and buy one. No part number is listed and the GM parts counter people say.....permanant with fuel pump. But they could be wrong, I suppose.
Read entries in this link...especially those by ChevyMgr, who I would think, would know......but you can also read his quote in his signature.
https://www.chevyhhr.net/forums/show...ht=fuel+filter
We also have discussed this many times related to the maintenance package deals some shops provide. It parallels "Power steering flush".....
I'll defer to ChevyMgr. But I think who ever told you about an "external" fuel filter, may be a little confused. Try and buy one. No part number is listed and the GM parts counter people say.....permanant with fuel pump. But they could be wrong, I suppose.
Read entries in this link...especially those by ChevyMgr, who I would think, would know......but you can also read his quote in his signature.
https://www.chevyhhr.net/forums/show...ht=fuel+filter
We also have discussed this many times related to the maintenance package deals some shops provide. It parallels "Power steering flush".....
Fits HHR, Cobalt, G6 G5 Mailbu and others..... I also got mine from a reputable source...... Had to have one replaced on one of our Fleet Vehicles. Not saying there is not one one the pump, just an inline also.
Senior Member
Joined: 02-16-2009
Posts: 6,038
From: Frankenmuth/Flint, MI
Sorta like the older Dex-Cool back in the 90's that was good for how long, but then was bad for your engine...
Senior Member
Joined: 12-20-2008
Posts: 835
From: durham north carolina
mpg is increased again!!!
i did nothing to my hhr , except wash and put rain x on the windows....gas went up 10-15 cents....i think that the gas is different....i always buy from the same place...i been testing premium for about 2 weeks now....outside temp has been 60-70 for 2 weeks , so that hasn't changed....it was very wet w/rain on/off....they must have changed the gas....my mpg has went up 2-3...i'll know for sure how much in a few days....i can't believe the dash thing is showing 32-35 above 70mph.
Senior Member
Joined: 02-16-2009
Posts: 6,038
From: Frankenmuth/Flint, MI
i did nothing to my hhr , except wash and put rain x on the windows....gas went up 10-15 cents....i think that the gas is different....i always buy from the same place...i been testing premium for about 2 weeks now....outside temp has been 60-70 for 2 weeks , so that hasn't changed....it was very wet w/rain on/off....they must have changed the gas....my mpg has went up 2-3...i'll know for sure how much in a few days....i can't believe the dash thing is showing 32-35 above 70mph.
can play a hugh factor! 
