[David70]

For all the people thinking Shell gasoline makes their car run better on one tank, they get better mpg on a tank, or whatever, I can't even see a way for this to be possible. Base gasoline is the same as Walmart, Shell might have more detergents in it but past that I think it is in your head.

Different or more detergents won't suddenly raise performance and/or mpg and even if it did it wouldn't suddenly drop when you went back to some other gas.

[ZL9M2]

BMW will change it's recomendation as soon as the next fuel company writes them a bigger check. Just like their oil and oil change recomendations. I wouldn't get too caught up in it.

[SnowCover]

Originally Posted by David70

For all the people thinking Shell gasoline makes their car run better on one tank, they get better mpg on a tank, or whatever, I can't even see a way for this to be possible. Base gasoline is the same as Walmart, Shell might have more detergents in it but past that I think it is in your head.

Different or more detergents won't suddenly raise performance and/or mpg and even if it did it wouldn't suddenly drop when you went back to some other gas.

I sometimes get premium gas at the local Sam's Club because it's the cheapest.($3.149 last week) For some weird reason, there are always a lot of Mercedes and Audi waiting in line. I figured that if it was good enough for them, it was probably good enough for my BMWs?

Back when BP was still Top Tier, my local BP station was forcibly closed for over a month by the state's department of weights and measures(or something like that) due to bad pumps and contaminated underground gas storage tank. Needless to say, I never went back again.

[FrankMstein]

Originally Posted by David70

For all the people thinking Shell gasoline makes their car run better on one tank, they get better mpg on a tank, or whatever, I can't even see a way for this to be possible. Base gasoline is the same as Walmart, Shell might have more detergents in it but past that I think it is in your head.

Different or more detergents won't suddenly raise performance and/or mpg and even if it did it wouldn't suddenly drop when you went back to some other gas.

One tank will not clean a valve and suddenly improve deposits but valve cleaning (with detergents) WILL improve performance. I cleaned by wife's R56 mini valves and it felt like it just got tuned! Detergents will keep/increase performance over time. If you have ever had bad fuel and/or live with riding on the limit of a knock sensor in a rotary engine, it happens. Experience.

Also injector cleaning (in the fuel) WILL increase performance.

[David70]

Originally Posted by FrankMstein

One tank will not clean a valve and suddenly improve deposits but valve cleaning (with detergents) WILL improve performance. I cleaned by wife's R56 mini valves and it felt like it just got tuned! Detergents will keep/increase performance over time. If you have ever had bad fuel and/or live with riding on the limit of a knock sensor in a rotary engine, it happens. Experience.

Also injector cleaning (in the fuel) WILL increase performance.

All gas has detergents in it, I've never seen someone even attempt to prove one is better than another, just a lot of marketing and internet talk. If you ever come up with proof that a brand of fuel is better than another it might be believable.

In addition, if you have a direct injection engine without port injection (like your car), the ability for the gas to clean the valves is close to non existent.

[KevinC]

Originally Posted by David70

All gas has detergents in it, I've never seen someone even attempt to prove one is better than another, just a lot of marketing and internet talk. If you ever come up with proof that a brand of fuel is better than another it might be believable.

https://newsroom.aaa.com/2016/07/aaa...created-equal/

[David70]

Originally Posted by KevinC

https://newsroom.aaa.com/2016/07/aaa...created-equal/

So Shell isn't any better than Costco as they are both "Top Tier" and Shell's definitely not needed? Top Tier requires the brand to pay the company to be on the list and nobody says Top Tier has more detergents than some other brand, just that they meet Top Tier requirements. The tested "Top Tier" and "non Top Tier" - who knows which ones and they won't name the brands so we have no idea which one is better?

They tested some non Top Tier and some Top Tier and decided all Top Tier is better than the rest?

How did you clean your Mini's valves? Is it a direct injection car?

Top Tier brands, only thing we know is they paid Top Tier and they meet Top Tier requirements, some other brand not on the list may also meet Top Tier requirements. Based on the list you believe Puma Guatemala has better fuel than your local BP station?

44 Variety Canada
76 USA
Agua Caliente Fuel USA
Aloha USA
Ambrose Variety Canada
ARCO USA
ARCO Mexico
Beacon USA
Bear Creek Express Canada
Bear Creek Gas Bar Canada
Belmont Car Wash USA
Breakaway Canada
Cenex USA
Chevron Canada
Chevron USA
Chevron Mexico
CITGO USA
Co-op Canada
Conoco USA
Costco Wholesale USA
Costco Wholesale Canada
Costco Wholesale Puerto Rico
Costco Wholesale Mexico
Costco Wholesale Japan
CountryMark USA
Dash In USA
Diamond Shamrock USA
Dutch Gas & Variety Canada
Eagle Feather Trading Post USA
EcoMaxx Puerto Rico
Energy Mexico
Express Mart - Wisconsin USA
Exxon USA
Fast Fuel USA
Feather Falls Mini Mart USA
G Premium Mexico
G Super Mexico
G500 Mexico
Gold Medal Gasoline USA
Gulf Puerto Rico
Harmons Fuel Stop USA
Hele USA
HFN - Hawaii Fueling Network USA
Inver Canada
J&E Wendy USA
Kirkland Signature Gasoline USA
Kirkland Signature Gasoline Canada
Kirkland Signature Gasoline Puerto Rico
Kirkland Signature Gasoline Mexico
Kirkland Signature Gasoline Japan
Life's A Beach Gas & Variety Canada
Little Arrows Canada
Marathon USA
Marathon Mexico
Marathon Puerto Rico
Mega Saver USA
Meijer USA
Meijer Express USA
Mobil USA
Mobil Puerto Rico
Mohawk Fuels Canada
Morongo Travel Center USA
Mountain Sky Travel Center USA
Mr Gas Canada
Ohana Fuels USA
Pahvant Travel Plaza USA
Pechanga Gas Station USA
Phillips 66 USA
Phillips 66 Puerto Rico
Primax Colombia
Primax Peru
PUMA Guatemala
PUMA El Salvador
PUMA Honduras
PUMA Panama
PUMA Puerto Rico
QT USA
QuikTrip USA
Ranger USA
Ranger Fuel USA
Ranger Mustang USA
Ranger Stallion USA
Ranger Thoroughbred USA
Reeders USA
Rendichicas Plus Mexico
Road Ranger USA
Roote's Canada
Rutter's USA
Shamrock USA
Shelee's Travel Center USA
Shell USA
Shell Canada
Shell Puerto Rico
Shell Nitrogen Enriched USA
Shell Nitrogen Enriched Canada
Shell Nitrogen Enriched Puerto Rico
Shell V-Power USA
Shell V-Power Canada
Shell V-Power Puerto Rico
Shell V-Power NiTRO+