[Nick Beale]

I don't really know anything about engines but I did research the data on fuel stocks that you quote from "Air War Italy 1944-45" (and the source for those and the aircraft strengths you mention was a report discovered in USAF archives by Rabe Anton). Fuel stocks are a recurring issue and there are quite a lot more figures given in the book for different dates from October 1944 onward.

To quote from earlier in the book: "The month [April 1945] began with 226 cm of B4, 125 of C3 and 341 of J2 on hand. C3 hit an all time low of 93 [cbm] on the 10th] but a rare delivery on the 14-15th brought it back up to 132 [cbm]."

Please note that as far as I know none of the fuel figures relate only to the ANR, they are the stocks available to the Kommandierender General der Deutschen Luftwaffe in Italien for all his units, German and Italian. The Germans decided who got the fuel, the Italians had no control over this (see the events of August 1944 described earlier in the book).

At the period you're talking about, the same report says the Luftwaffe units in Italy had 11 x Ju 188 D-2; 1 x Ju 88 T-3; 8 x Bf 109 G-10/R2; 1 x Ar 234 B-2; 27 x Ju 87 D-3 and D-5; 3 x Fw 190 A-8 and 4 Fw 190 A-8. (And even this can't be entirely right, since wrecks of Fw 190 F-9s were also found postwar, as well as - intact - 3 x Fi 156 C-3 and a Bf 108).

One of the other documents you quote talks about testing with "Gruppe 2/11" and engine boosts for "einzelne Aufklaerer." So maybe the Bf 109 G-10s of 2./NAG 11, based at Campoformido-Udine in Italy were involved.