I have a question about the proper way to properly lubricate the enclosed driveshaft on these trucks... I have read to use 90 W same as the transmission, but the driveshaft is set up with grease fittings instead... The question is how much grease to pump in, specially at the joint section? I have used some of the red wheel bearing grease already, but not sure how much I should really put in there.. Thank you.
