jayhaitch
Silver Member
I emailed Amsoil tech services directly with exactly this question. Their recommendation was HDD, their Series 3000 5W30 Heavy Duty Diesel oil as opposed to their 10w30 oil. Now this is for our artic winter and hot summer climate, so 10w30 would probably be the best in more temperate climes.
AMSOIL - Series 3000 Synthetic 5W-30 Heavy Duty Diesel
AMSOIL - Series 3000 Synthetic 5W-30 Heavy Duty Diesel
AMSOIL - Series 3000 Synthetic 5W-30 Heavy Duty Diesel
AMSOIL - Series 3000 Synthetic 5W-30 Heavy Duty Diesel