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GS - 2nd Gen (1998-2005) Discussion about the second generation GS300, GS400 and GS430 (1998 - 2005)

full tank of gas=240 city miles!!!

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Old 02-18-12 | 11:54 PM
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I just use the Chevron gas 91 and Chevron with Techron complete fuel system treatment every 6k. Works well.
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Old 02-19-12 | 03:19 PM
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Default 280 MPG for that V8 is better then I Xpecting camparing to my Inline6
Originally Posted by tianh
I am only getting 280 miles till the light this is with 80 percent city and 20 percent freeway.. gs400.. What do you guys think it could be? Shell gas, and just put in some Lucas injector cleaner.
(280 miles for the V8) That is really good MPG for a V8 and the percentage of city driving. I think I need a tune up for my inline I6. 50/50 city/hwy and am only getting 280 for inline 6. I always top her off at the first sight the empty light indicator lite on, with 2 gallons in reserve to spare. Here are my numbers 280/16 or 290/16 with Costco gas.
Last edited by GS714; 02-19-12 at 09:50 PM. Reason: Oop
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Old 02-19-12 | 03:26 PM
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I really love this thread! I can't believe i cleaned my maf sensor by my self
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Old 02-19-12 | 03:32 PM
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Im only getting 220 miles per tank in my 300 ! CITY ! Anyone gettin' worst ?
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Old 02-19-12 | 05:06 PM
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Originally Posted by GS714
I am thinking of doping one in the car. Since you mention it, I live in southern California, and there are winds that blown sand all over the places. Especially Santa Wind. Instead of a blanket of pollen in the morning all over the car. It covered with sand. Just for kick. I have never wash my car so often ever since I moved to California and seldom get a free car wash.
Don't do it I have a 4runner I put one in and the intake after the filtervwas full of dust, conclusion: K&No filter by the way the drop in one is all noise and no power you gain nothing but dirt
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Old 02-19-12 | 05:36 PM
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+1, haven't done it yet, but plan on it.

Generally speaking I get 100 miles per 1/4 tank on the gauge. And in general I get to the E line and put in 16 gallons.

Originally Posted by GS4_Fiend
I just use the Chevron gas 91 and Chevron with Techron complete fuel system treatment every 6k. Works well.
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Old 02-19-12 | 05:43 PM
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I get about 370miles on the full tank 2002 GS300 with 247k miles
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Old 02-19-12 | 08:30 PM
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I probably average about that. Nice on making it to nearly quarter million. My Fleetwood is already there. Problem is the body is having a hard time with rust, but the drivetrain is fantastic.

Originally Posted by Quicksc4
I get about 370miles on the full tank 2002 GS300 with 247k miles
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Old 02-22-12 | 10:38 PM
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Default Got a slight increased in MPG according to the computer
I added the Lucas 10003 Upper Cylinder Lubrication & Injector Cleaner 32 oz on Sunday. I noticed my computer shown in an increase in MPG in city driving to 20 was normally 17-18mpg. I will use the filled/divided method probably within one week and will post asap. With the gas price soaring. I think I may have to stick with Costco gas.
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Old 02-23-12 | 02:15 AM
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Gas prices up here 30 ¢ a gallon overnight..... ggrrrrrrrr.. news report comes out daying $5 a gal by mem day and local stations jack up prices.
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Old 02-23-12 | 10:55 AM
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yes.. gas price is going up it's $4.49 for 91 over here.
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Old 02-23-12 | 02:03 PM
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Originally Posted by GS4_Fiend
yes.. gas price is going up it's $4.49 for 91 over here.
We must be in the same area. I'm seeing these prices as well. No bueno
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Old 03-10-12 | 07:26 PM
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Default maf sensor before and after
i cleaned my maf sensor 2 weeks ago before was 220 miles now 260+ thanks for this thread and tips
Attached Thumbnails full tank of gas=240 city miles!!!-mileage1.jpg   full tank of gas=240 city miles!!!-mileage-2.jpg  
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Old 03-11-12 | 12:17 AM
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My general rule is no less than 100 miles per 1/4 tank and then I know I am on target for 23 mpg.
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Old 03-11-12 | 01:01 AM
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Originally Posted by kwags1023
i cleaned my maf sensor 2 weeks ago before was 220 miles now 260+ thanks for this thread and tips
I'm getting the same MPG on my GS430, as your second picture also. I'm assuming winter blend is over that's why I'm getting an increase in MPG.
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