John Deere 9500 combine oil - Ford Powerstroke Diesel Forum
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post #1 of 2 Old 09-28-2009, 07:07 PM Thread Starter
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John Deere 9500 combine oil

Last year we sold our old 1979 JD 6620 and got a 91 JD 9500. The previous owner told us that he switched the oil from conventional JD Plus 50 to Ams fully synthetic oil. We changed it once last year and used the Ams and it is due again. Dad was wondering if it would be bad to switch back from the Ams synthetic oil to conventional JD Plus 50. I talked to the local diesel shop and they said that it would probably be ok to go to a synthetic blend but not conventional. Dad just wants to get it changed before we run tomorrow so he's going to go get the Ams again.
Could somebody shed some light on this for us?

My truck:
99.5 F250 4x4 Ex cab long bed
7.3, zf6
Swamps 175/30's
Cales tunes
DIY Intake & Zoodad mod
Muffler Delete
Foil Delete
DIY leveling kit
AIH delete
Autometer Phantom II Boost and Pyro
Luk Clutch

Dad's Truck:
2001 F250 4x4 Ex cab short bed
7.3, 4R100
Muffler Delete
DIY Intake & Zoodad mod
Foil Delete
AIH Delete
DP Tuner F5
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post #2 of 2 Old 09-28-2009, 08:39 PM
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It shouldn't hurt it, the synthetic would be better though. The JD oil won't hurt anything, it is a good oil..

How many hours between oil changes?

2006 F-350 4X4 FX4 Tuscany Longhorn , Leer Custom bed cap, RECON lights, Upfitter switches, Whelen Lighting, Hi-Idle Mod.

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