ohsixx

A couple of years ago, I read a professional research paper which was written my an engineer who worked for a major oil refinery.

The paper was quite detailed and he presented some compelling evidence that rotating gasoline is the next best thing you can do for your engine besides changing the oil regularly.

He claimed that basically all gas was more or less the same, but oil compainies use different additives. He went on to state the additives from one gas had the capability to clean up deposits left behind by the additives of the previous gas used. He had actually disasembled and inspected engines to prove his case.

He recommended using three different brands and rotating every 5,000 miles. However, he also said that rotating with just two brands would be almost as good as three.

So, I have been following his advice; rotating every 5,000 miles between Amoco and Shell.

I may be the only person on the planet doing this, but it is not costing me anything extra and the two stations are close to my home.

So, what do you think about rotating gas?

DonW-Cape Cod

FWIW, I read the same post a year or so ago, and I'm doing the same thing. I figure it doesn't cost anything, can't hurt, might keep the engine cleaner, and the article seemed genuine.

Jim Michaels

But you guys have probably been driving around with essentially the same air in your tires for years. When tires experience rapid wear, it's usually because the tire air wasn't changed regularly. When I visited Colorado recently, my car handled terribly until I put in some of their high altitude air. Please don't be offended; my post is for entertainment purposes only. If I thought your fuel rotation habit was pure hooey I wouldn't be asking what's the best second fuel to rotate with EXXON?

DonW-Cape Cod

Any non-ethanol... <img src="graemlins/drink.gif" border="0" alt="[cherrsagai]" />

ohsixx

Jim: Gosh! I gotta get me some of that high altitude air.

Actually, my first choice in gas is Amoco Ultimate. There is a little window in the nozzle pump and you can see the gas as it goes into your tank. It is always perfectly clear.

bloke

Do you also see the performance difference between the gases? I noticed, I get the worse mileage and the best performance in this order.

1) Amoco
2) Sunoco
3) Mobil
4) Shell never again (mabye a bad batch).
5) Exxon never used it
6) Chevron never seen it

ohsixx

A couple of other gas things I have learned over the years.

Try to buy from newer stations; yuck has not had a chance to built up in their underground tanks.

Never buy gas from a station when a tanker truck is filling the tanks. It is no doubt stirring up a bunch of yuck within the tank.

karl k

[quote]Originally posted by ohsixx:
<strong>A couple of other gas things I have learned over the years.

Try to buy from newer stations; yuck has not had a chance to built up in their underground tanks.

Never buy gas from a station when a tanker truck is filling the tanks. It is no doubt stirring up a bunch of yuck within the tank.</strong><hr></blockquote>I get my gas at COSTCO.

All stations are new here in S. Fl and COSTCO buys the best quality/least expensive gas on the market, always changing suppliers.