You can never go wrong by adding Prist.

Karl

"Curator" N185KG
"Peter" wrote in message
...
Hi All,

I fly a TB20 (avgas). The flight manual recommends various things but
does not give any ambient temperatures below which they should be
used.

The whole subject is a bit vague anyway, with stories circulating
about avtur additives being different from (or identical to) to the
avgas ones.

What would the experienced pilots here recommend, for an OAT down to
say -20C or -25C?

Peter.
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