I'm filthy hot and bothered.
Just crawled out from underneath having completed this year's rustproofing.
Exhaust sprayed with galvanising paint.
All the nooks and crannies sprayed with ACF50.
Whole underside and chassis cavities with chain lube*
Hand coated the chassis in marine grease, rear axle still well coated from last application.
** re the chain lube, it was just about the cheapest i could find in aerosol multi pack form, no idea how good it would be for chains but was surprisingly good for what was required here, powerful misting spray which sort of congeals in place after a short time, each aerosol came with a 6" flexi spout which means it can make quite useful for chassis and suspension cavities too.
Car care chain spray 450ml x 12 for £32.90, ebay number 144463149381 if anyone's interested.