i have put Sinclair gas (90) in my MO a few times and it seems to work better than others. a sticker on the pump says the gas has an additive called "SG 2000". anybody know what that is and if it is OK for MO?
"Sinclair Gasoline with SG-2000 Detergent Additive.
All Sinclair gasolines are fortified with SG-2000, the latest clean-up and keep-clean gasoline additive. SG-2000 prevents intake valve deposits, keeps fuel injectors and carburetors clean, helps control exhaust emissions and protects against corrosion. Using the BMW test procedure, the Southwest Research Institute in San Antonio, Texas has proven that Sinclair gasolines meet the Unlimited Mileage Criteria."
Surprisingly, the answer is no. Sinclair is not recognized as a "Top Tier" Detergent Gasoline Retailer.
The "Top Tier" Gasoline Retailers are listed below:
MFA Oil Company
Kwik Trip/Kwik Star
The Somerset Refinery, Inc.
Tri-Par Oil Company
Top Tier is not a particular agent or detergent, but rather a certification that a particular brand or grade of gasoline (gasoline of course refers to what comes out of the pump, which is really gasoline+additives) will keep the level of deposits to a low level over a certain period. The actual gasoline every station sells is basically the same stuff, but its the detergents that go into it which makes the difference. The Top Tier standard was drawn up by GM, BMW, and Toyota I believe, but I also read somewhere else that BMW's deposits standard is among the toughest, so if a gasoline passes that test, its will likely meet Top Tier standards as well.
Every brand uses a different buzzword for their proprietary gasoline additive - Chevron uses Techron, 76 calls it ProPower, Shell calls it V-Power, etc...
Chevron is the only oil company to market their gasoline branded detergent in the aftermarket as well - with their Techron line of fuel additives you can buy at the local Autozone or Kragen. Valvoline also markets Synpower fuel detergent - but you say Valvoline doesn't sell gas? It actually does, under the brand name Marathon, which has stations in the Midwest.
Interestingly, the biggest oil company, Exxon Mobil, is not on the Top Tier list, although its likely they also meet the standard as well.
Just because a company is not listed in the "Top Tier" list does not mean that the gas you are using is not "Top Tier" quality. To be on the list, ALL of the grades of your fuel sold at ALL of your stations (in the US and Canada, I think) have to meet the top tier standards.
So it's entirely possible that Sinclair has a grade or two of fuel that does meet the bar, but perhaps a grade or two that does not.
Or they simply haven't gone through the necessary testing and application process.