I have been printing everything in PLA but the objects are mainly used inside or if outdoors they do not stay there. I need to print a part for my garden tractor trailer which sits outdoors 24/7 so it's always exposed to the elements. Strength is also an issue, which can be taken care of with infill I will assume. Never printed with PETG so I realize there will be a tuning curve to go through.

Which filament will be better for this purpose? No enclosure or exhaust fan so I would like to stay away from ABS too.

Thanks