.

this will be "play a blend" winter

during winter average temp is 14 to 20 F and lowest gets -5F

I guess that B20 is highest safe blend in my case ....

.

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w126 500SEC gen II euro, powered by OM617 turbo stolen from 84 300SD 2.88 diff,EGR blinded
next wish/project: w114 coupe OM603 powered