[NoNo01]

Gentleman,

regarding Lange, Bruno ; "Typenhandbuch der deutschen Luftfahrttechnik" page 357 - 360, this where designations of the RLM-Klassifizierungssystem für Flugkraftstoffe (roughly - RLM-classificationsystem for aeronautical fuel).

Here we find the following designations:A1, A2, A3, A4, A5, B1, B2, B3, B4, C1, C2, C3, K1 and J1 with there technical data.

For example; B4: OZ(Oktanzahl - You guest it? octane number) 87; 0,71 - 0,76 kg/l, TEL (Tetra Ethyl Lead) up to 0,12 Vol%, Temperature of ebullition between 40° to 170° C (90 Vol% up to 160°C), Cold-resistant to -60°C.
Used for example with: As 410A, BMW 132A and Dc, 801A and C, DB 601A and E, Jumo 211F, 213A.

C3: OZ 96 0,76 - 0,795 kg/l, TEL up to 0,12 Vol%, Temperature of ebullition between 40° - 180°C, (90 Vol% up to 165°C), Cold-resistant to -60°C.
Used for example with: BMW 132H, 801D and G, DB 601N, 603S and 605A.

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Schoene Gruesze

Norbert