[Sirrotica]

Originally Posted by VCho455

It's a little known secret that there is no 89 or midrange octane delivered to gas stations. The midrange octane is created at the station by mixing the regular and premium fuels from the tanks. The cost of having a third separate tank system is too expensive in today's marketplace.

As far as this "little known secret" goes, the secret isn't accurate.

Formerly I was a driver that drove fuel tanker for a few years before I retired, this statement isn't entirely true. While some stations do mix the premium and regular fuel at the pumps to make the mid grade, there are also many stations that do have 3 gasoline storage tanks, and the mid grade fuel is blended at the loading racks as it goes into the tanker. It isn't cut and dried that all stations don't have a third tank for mid grade, and they're blending it onsite. The tanker usually has 4 compartments so they can transport 3 grades of gasoline, as well as diesel.

The code for underground mid grade fill cap is a blue background with a white cross in the center. The premium is a red background with a white cross in the center. Regular fuel is a white background with a black cross in the center. The fill markings for gasoline are on the far left.



Can't believe everything you read on the internet.

[mgarblik]

Concerning mixing the motor oils. You might want to go on the motor oil web site for whatever brand you have and look up the Product Data Sheets for each of the oils. If they look the same or very close, you can likely mix them without any issues.