IH ONLY NORTH - View Single Post - WHY OIL GOES BAD….AND HOW YOU CAN PREVENT IT

Greg R · 07-29-2008, 07:08 PM

This was a good read! Thanks. I check in at Machinery Lubrication's webpage occasionally. Gotta quick question. I've been discouraging folks from using multi-weight motor oils in their manual transmissions. I've been countered with the easier shifts, motor weights vs gear weights on the chart, blah, blah. The deal is I've read that the gearing puts the oil through more shearing than what it gets in an engine. That leads to more severe viscosity additive depletion. Not a big deal with straight weight like 30 or 50. So I say multi-vis motor oil doesn't last as long in a gear box as gear oil. I can't find where I've read it, or where I've put it for that matter. So what's your take on it?

GR

07-29-2008, 07:08 PM	#2 (permalink)
Greg R Member Join Date: Jul 2008 Member Number: 527 Posts: 90	Re: WHY OIL GOES BAD….AND HOW YOU CAN PREVENT IT This was a good read! Thanks. I check in at Machinery Lubrication's webpage occasionally. Gotta quick question. I've been discouraging folks from using multi-weight motor oils in their manual transmissions. I've been countered with the easier shifts, motor weights vs gear weights on the chart, blah, blah. The deal is I've read that the gearing puts the oil through more shearing than what it gets in an engine. That leads to more severe viscosity additive depletion. Not a big deal with straight weight like 30 or 50. So I say multi-vis motor oil doesn't last as long in a gear box as gear oil. I can't find where I've read it, or where I've put it for that matter. So what's your take on it? GR