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steve21757 10-13-2009 17:50:31 70.242.230.169 32949 Report to Moderator	I am going to change the oil in my B-61 in the next couple of days.I live in Texas and was wondering would it be best to use Straight 30wt.or 40wt.THANKS ALWAYS FOR THE HELP. STEVE. [Reply]  [Send Email]
michael a. lee 10-18-2009 07:54:16 64.33.255.26 32987 Report to Moderator	Re: B-61 MACK HELP in reply to steve21757, 10-13-2009 17:50:31   one of the reasons that engines last longer these days is multiviscosity oil. in the old days everyone thought your oil or grease should be as thick as a rope. trouble was that the bearings never got lubed untill the oil warmed up. this goes for engine oil and tranny and rearend grease as well.   [Reply]  [Send Email]
RUSS SPRINGER 10-14-2009 04:37:28 67.151.214.3 32952 Report to Moderator	Re: B-61 MACK HELP in reply to steve21757, 10-13-2009 17:50:31   30 wt was the recomended oil in a 673 engine   [Reply]  [No Email]
ericlb 10-13-2009 20:59:31 12.189.32.37 32951 Report to Moderator	Re: B-61 MACK HELP in reply to steve21757, 10-13-2009 17:50:31   i have run rotella 15w-40 in my big diesels for many years, never a oil related problem, straight weight oil will make that old mack a real chore to start in cold weather ,   [Reply]  [No Email]