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· Registered
1,222 Posts
Discussion Starter · #1 ·
Im an easy driver. Always have been.
I do the gentle accelerations and im the type that I see a light turn yellow and I let off the gas and let the momentum keep rolling you towards the red light.
I also try to do my highway driving at 55-65 most of the time.
Ive taught my gf to do the same in her 07 Impala. (I drive an 03 Trailblazer- which gives me about 18-19 mpg in combined street highway driving).
she gets about 22 mpg in combined. When I drive the impala on long non stop road trips at 55-60- we see 30-32 MPG from her 3.9L with AFM..........
Now- Ive always known about carbon buildup on easy driven cars.............
So the other day were headed back from the movies- and im doing 55- when the freeway was clear enough I simply stepped in the gas pedal all the way- and the engine came to life- engine revved up high and we were soon headed to 80 mph.... at which point I let off- and my gf is looking at me asking why did you just do that?
I explained.
but yes- I was able to see a large puff of smoke out the back.
On subsequent tries- the smoke less- and then no more smoke.
About every month or two- I do the same on the Trailblazer- get on an empty on ramp- and from a rolling start of about 15 MPH- I stomp on the gas- it gets the engine to rev up and clear out any accumulation.
I used to do that on my 70 350 4 brl. since it had the problem of run on for a while.........
anyone else still do this?
Anything change in recent years to tell me not to do this?

· Premium Member
3,301 Posts
I just drive like that all the time and then I dont have to worry about it....:D

I think its always good to let the vehicle stretch it's legs from time to time. Some Fuel companies and automakers have joined forces and to create a standard for fuel quality called Top Tier fuels.
Here is what GM says:

A new class of fuel called TOP TIER Detergent Gasoline is appearing at retail stations of some fuel marketers. This gasoline meets detergency standards developed by four automotive companies. All vehicles will benefit from using TOP TIER Detergent Gasoline over gasoline containing the "Lowest Additive Concentration" set by the EPA. Those vehicles that have experienced deposit related concerns may especially benefit from the use of TOP TIER Detergent Gasoline.

Gasoline Brands That Currently Meet TOP TIER Detergent Gasoline Standards
As of November 15, 2006, all grades of the following gasoline brands meet the TOP TIER Detergent Gasoline Standards:

• Chevron

• QuikTrip

• Conoco

• Phillips 66

• 76

• Shell

• Entec Stations located in the greater Montgomery, Alabama area.

• MFA Oil Company located throughout Missouri.

• Kwik Trip, Inc. in Minnesota and Wisconsin andKwik Star convenience stores in Iowa.

• The Somerset Refinery, Inc. at Somerset Oil stations in Kentucky.

• Aloha Petroleum

• Tri-Par Oil Company

• Texaco

What is TOP TIER Detergent Gasoline?
TOP TIER Detergent Gasoline is a new class of gasoline with enhanced detergency. It meets new, voluntary deposit control standards developed by four automotive companies that exceed the detergent requirements imposed by the EPA.

Where Can TOP TIER Detergent Gasoline Be Purchased?
The TOP TIER program began on May 3, 2004. Some fuel marketers have already joined and have introduced TOP TIER Detergent Gasoline. This is a voluntary program and not all fuel marketers will offer this product. Once fuel marketers make public announcements, they will appear on a list of brands that meet the TOP TIER standards.

Where Can I find the Latest Information on TOP TIER Fuel and Retailers?
On the web, please visit for additional information and updated retailer lists.

Who developed TOP TIER Detergent Gasoline standards?
TOP TIER Detergent Gasoline standards were developed by four automotive companies: BMW, General Motors, Honda and Toyota.

Why was TOP TIER Detergent Gasoline developed?
TOP TIER Detergent Gasoline was developed to increase the level of detergent additive in gasoline. The EPA requires that all gasoline sold in the U.S. contain a detergent additive. However, the requirement is minimal and in many cases, is not sufficient to keep engines clean. In order to meet TOP TIER Detergent Gasoline standards, a higher level of detergent is needed than what is required by the EPA. Also, TOP TIER was developed to give fuel marketers the opportunity to differentiate their product.

Why did the four automotive companies join together to develop TOP TIER?
All four corporations recognized the benefits to both the vehicle and the consumer. Also, joining together emphasized that low detergency is an issue of concern to several automotive companies.

What are the benefits of TOP TIER Detergent Gasoline?
TOP TIER Detergent Gasoline will help keep engines cleaner than gasoline containing the "Lowest Additive Concentration" set by the EPA. Clean engines help provide optimal fuel economy and performance and reduced emissions. Also, use of TOP TIER Detergent Gasoline will help reduce deposit related concerns.
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