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#3314092 - 03/16/14 06:39 PM Re: STP in every tank! [Re: Errtt]
Hyde244 Offline


Registered: 12/29/12
Posts: 670
Loc: Ohio
My additive trick?

Just use Top Tier gasoline as much as possible.
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2007 Ford Focus ZX4 SES - 2.0L Duratec | 4F27E Auto | 92,000 miles
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#3386516 - 06/01/14 08:13 PM Re: STP in every tank! [Re: Errtt]
wannafbody Offline


Registered: 01/02/08
Posts: 895
Loc: PA
Not sure you guys know this but Marathon uses some type of STP additive in their pump gas.
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#3386568 - 06/01/14 09:44 PM Re: STP in every tank! [Re: wannafbody]
dave5358 Offline


Registered: 04/25/13
Posts: 669
Loc: North Bend
Originally Posted By: wannafbody
Not sure you guys know this but Marathon uses some type of STP additive in their pump gas.

Marathon's been doing that since 2006. STP's fuel additive is/was a competitor of Chevron's Techron additive. The Marathon/STP relationship continues to this day.

The STP Gas Treatment you buy across the counter does not contain PEA - it's basically a fairly old formulation of Stoddard Solvent, petroleum distillates, napthalene, etc.

For Marathon to stay competitive with it's gasoline product, the STP additive in Marathon gas might be something quite different than the STP you can buy. It probably contains PEA. I couldn't find any information on this, but I doubt that they could keep it a secret for long.
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#3386587 - 06/01/14 10:05 PM Re: STP in every tank! [Re: wannafbody]
dave5358 Offline


Registered: 04/25/13
Posts: 669
Loc: North Bend
Originally Posted By: wannafbody
Not sure you guys know this but Marathon uses some type of STP additive in their pump gas.

I just noticed that Marathon is not listed as a Top Tier gasoline retailer, so maybe the STP in Marathon gasoline is really the same as the STP you buy across the counter.
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#3388983 - 06/04/14 06:34 PM Re: STP in every tank! [Re: Chris142]
dave5358 Offline


Registered: 04/25/13
Posts: 669
Loc: North Bend
Originally Posted By: Chris142
Originally Posted By: Donald
We use to call it Studebaker Testing Products.

Studebaker recomended a bottle of stp goo with every oil change. Had a sticker on the valvecover

Right. It said 'Studebaker Tested Products.' Studebaker owned STP at the time.
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#3389075 - 06/04/14 08:20 PM Re: STP in every tank! [Re: Hyde244]
JustinH Online   content


Registered: 04/17/04
Posts: 4483
Loc: Texas
Originally Posted By: Hyde244
My additive trick?

Just use Top Tier gasoline as much as possible.


Costco near my work is top tier, and they are the cheapest around.

I get in there and buy gas nearly every time.

I haven't put anything in a fuel tank in YEARS besides gas.
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#3390147 - 06/05/14 08:42 PM Re: STP in every tank! [Re: Errtt]
901Memphis Online   content


Registered: 08/14/10
Posts: 12003
Loc: Northern Kentucky
The only top tier gas I have in town are bp and Shell and they are consistently 40-50 cents more per gallon. I pony up now and then but I think they are a little more expensive than your average to tier stations. We have so many Speedway gas stations and Murphys or Kroger is always the lowest in town. BP and Shell have been $3.99 all year I think while I've been consistently paying 3.60 at Murphys.
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2002 Buick Century 125k - Built 4T65e(Maxlife) - Edge 0w40 + Fram XG3980
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#3390155 - 06/05/14 08:55 PM Re: STP in every tank! [Re: Errtt]
Clevy Offline


Registered: 11/11/10
Posts: 9783
Loc: Saskatoon canada
I use tc-w3 in every tank,for everything I own that burns fuel.
My forklift has 2000 hours and runs better than the one we lease with 600 hours.
My generators and compressors have never required any type of carb service,nor has they had any issues with any rubber parts and I've got 2 compressors with over 10000 hours and one of those is closer to 15000.
So folks can say whatever they want about fuel additives. In my experience when compared to other crews that own identical equipment my stuff lasts pretty much indefinitely so far.
A few pennies vs hundreds in service costs.
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#3390933 - 06/06/14 05:50 PM Re: STP in every tank! [Re: dave5358]
Studebaker Offline


Registered: 12/07/03
Posts: 231
Loc: Outer Banks, NC
Originally Posted By: dave5358
Originally Posted By: Chris142
Originally Posted By: Donald
We use to call it Studebaker Testing Products.

Studebaker recomended a bottle of stp goo with every oil change. Had a sticker on the valvecover

Right. It said 'Studebaker Tested Products.' Studebaker owned STP at the time.


Hey, don't make fun of Studebaker!

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