g741.org

Has anyone used an oil modifier ie: additive to reduce friction in the transfer case? I emailed one mfg. about using their product with brass/bronze and they said it was incompatable. Without starting a big debate, any info? good, bad idea?

Just recently there was a thread on lubricants for the M-37.

http://www.g741.org/PHPBB/viewtopic.php?f=3&t=677

Charles gave some recommendations that you might find useful.

52 M-42

IIRC, that thread was for lubes, the question here is more about additives. I've heard good things about Lucas Oil Stabilizer, so I'm going to watch this thread for info.

Ive got Lucas in my T-case and diffs...............Im happy.

Most additives or supplements are heavy oils. While there can be benefits to using these products, they create harder rolling assemblies, which makes for stiff shifting in trans and t/case assemblies and hurts fuel economy to some degree because they make the engine work harder when used. The free flowing lighter weight oils of today will do a better job without creating a drag on the assembly, and do not require the use of supplements in order to get superior benefits. You can make the call, but the bottom line is simple; the lighter the oil that will do the job of lubricating as required in any given application correctly is the better choice for numerous reasons. Lubricant technology has changed by light years in recent years. A little simple research will reveal lots of applicable information. The recommendations on the old mil spec lube orders is actually almost worthless when considering today's products. The old saying some swear by, "if it was good enough then, it should be fine for now;" that is basically ignorance gone to seed. Things change, that includes lubricant options along with everything else.