Originally Posted By: tommygunn
Why its marketing and not fact:
Do all these extra additives actually do anything to make paying extra for them worthwhile? And "more must be better" is not an answer. Referring to Consumer Reports saying cheap gas ruins your car isn't either. I'm talking proof.
Yes, PEA has been independently tested (private labs and EPA labs) and shown to be much more effective than other detergents at cleaning deposits (carbon and competitors deposits off of engine mechanicals. Contact Chevron for the printed test results.
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Additives are maybe a penny a gallon and people are paying (sometimes) ten times that for "top tier fuel".
A bit more than that, especially for the truly effective ones like PEA.
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Its marketing. The fact everyone shouts its not is funny. You seriously think oil companies are just doing you a favor by selling licensing rights to Top Tier to companies who dump a few extra additives in the tanks?
The oil companies didn't create the idea of top tier level of detergents, the auto manufacturers did, partly because it was found through THEIR testing that the EPA minimum detergency was mostly INEFFECTIVE at cleaning deposits from engines resulting in poor performance and reduced MPGs and INCREASED emissions as well, and also because CONSUMERS reported perormance issues as well.
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Bearing in mind we went from:
]Consumer Reports just did a report on America's favorite gas station and its Shell once again. But in the article they did show their experiments and the valves pulled on engines showed way more deposits when the cars were driven on no-name gas.
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Remember that the Top Tier requirements are for specific makes. That Jeep had no issues, perhaps the design is tolerant of low detergent gas, you yourself mention you don't really know where the fuel was purchased perhaps it was using a HD fuel, maybe not. As engine design tolerances get tighter the need for high detergent gasoline becomes greater.
I'll trust the car manufacturing engineers that pushed for the higher detergent fuel products over the few anecdotal examples a few random posters put here.
I think the reality is if your specific car needs special fuel to work correctly, thats an engineering problem. There's plenty of cars out there that run just fine on regular gas from any regular station and they don't explode, catch fire, or give you herpes, so obviously regular gas runs fine in a
regular car...
antiqueshell is just making sure everyone knows if you run one of those special cars that need special gas you'd better pay more and get Top Tier fuel, or Consumer Reports says you might end up with a ruined engine.
You are looking at this through the eyes of an uneducated consumer. The truth is that US automotive pump gas tends to be less refined and higher in impurities than say gas from Europe or Japan.
Those import makers are NOT going to create a completely different engine just to suit one market nor should they. While it is unlikely that you will destroy an engine on lower detergent gas it is probable that you'll end up with long term drivability/performance issues.
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I wanna see a car manufacturer REQUIRE Top Tier, then this all makes sense. Until then, its marketing. Your primary worry about buying gas is getting bad gas, like water in fuel issues, and that happens anywhere.
The fact that the manufactures SUGGEST using higher detergent gas in their cars is enough. Engineers know that a higher detergent level in close tolerance engines that were designed to use a more pure fuel will likely fare better in the long run.
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Reality is: you can maybe trust a big company more to be more strict about monitoring issues like water in their fuel, because they don't like lawsuits. Thats all I can see as evidence of Top Tier standards.
Companys that can pay the couple of grand to rock a "Top Tier" label probably aren't broke in the first place running a Ma and Pa's gas stop.
As far as price goes at least most of the places I've been you can get regular top tier for the same price as non top tier or in some cases at some of the minor brands for even less. That is a good deal to me.