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marsmann · 06-06-2016, 08:52 PM

Here in PA where I live, we've always had four. 87, 89. 91, and 93.

Never heard of Special 88. Interesting. If they don't have different detergency between them then I have to assume they are just blending in some fashion.

06-06-2016, 08:52 PM	#3
marsmann Drives: 2012 2SS/RS Vert M6 Join Date: Jun 2014 Location: South East, PA Posts: 117	Here in PA where I live, we've always had four. 87, 89. 91, and 93. Never heard of Special 88. Interesting. If they don't have different detergency between them then I have to assume they are just blending in some fashion.