LOL
Hey Batz, Gripen already posted a link that showed German fuel production. According to it C3 had the production priority. Fuel of any type was scarce toward the end of the war. Here it is....
http://www.fischer-tropsch.org/primary_documents/gvt_reports/USNAVY/tech_rpt_145_45/rpt_145_45_sec2.htm#Composition and Specification
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The relative volumes of production of the two grades cannot be accurately given, but in the last war years the major volume, perhaps two-thirds (2/3) of this total has the C-3 grade. Every effort was being made toward the end of the war to increase isoparaffin production so that C-3 volume could be increased for fighter plane use. The isoparaffin usage in that grade had already been cut to a minimum.
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So it makes sense that if you have no other fuel available then use what you have. Common sense dictates that you would recommend the best performing fuel and use the phrase "if necessary" for the one that works but doesn't work as well.
I know you can't stand to have your supreme knowledge of all things Luftwaffe questioned, Batz. Sorry but I won't take another discussion on a different BB by the same folks as proof. The RLM document is presented and the Jumo 213 could use "C3" if necessary. I highly doubt your claim of increased performance on it holds water though.
Keep up with the discussion, bro.
Crumpp