81 Ezgo Marathon differential oil weight?

flashboiler · 10-17-2016, 03:41 PM

Hi all,
I just bought an 81 EZGO marathon ( 2 stroke premix)

It runs fairly well, it's very loud at speed... Mainly from vibration, not so much engine noise, anyway back to my post topic:

I planned on changing the differential oil but I'm finding conflicting info on the proper weight oil.

I found an 85 EZGO manual that calls for "Chevron RPM DELO Multi-service 200-30" but I can't find a cross reference.

Is the proper oil 30wt (I assume straight 30wt, non detergent) or 90wt? or?

The 30wt references I see online are usually electric carts with helical gears, my cart has a standard hypoid cut rearend.

Seems like 90wt would be "safe" but would cause a lot of drag if 30wt is correct oil.

Appreciate any help.

racin161 · 10-17-2016, 08:42 PM

Welcome to BGW Flash !!! Pretty much your choice. Some uses 30 w and 85/90 gear oil. Really don't matter as were not DRAG RACING. Lets face it even 22 mph is quick on a cart but some would disagree so we won't go there.

I use mine for work horses and to save the "ole man steps" and you are talking about a 1981 so I'd say be easy on the "ole girl" and enjoy carting. I started with 1 and now have 5 ask my wife !!!

LOU

10-17-2016, 03:41 PM	#1
flashboiler Not Yet Wild Join Date: Oct 2016 Posts: 5	81 Ezgo Marathon differential oil weight? Hi all, I just bought an 81 EZGO marathon ( 2 stroke premix) It runs fairly well, it's very loud at speed... Mainly from vibration, not so much engine noise, anyway back to my post topic: I planned on changing the differential oil but I'm finding conflicting info on the proper weight oil. I found an 85 EZGO manual that calls for "Chevron RPM DELO Multi-service 200-30" but I can't find a cross reference. Is the proper oil 30wt (I assume straight 30wt, non detergent) or 90wt? or? The 30wt references I see online are usually electric carts with helical gears, my cart has a standard hypoid cut rearend. Seems like 90wt would be "safe" but would cause a lot of drag if 30wt is correct oil. Appreciate any help.
flashboiler Not Yet Wild Join Date: Oct 2016 Posts: 5

10-17-2016, 08:42 PM	#2
racin161 Gone Wild Join Date: Feb 2011 Posts: 1,515	Re: 81 Ezgo Marathon differential oil weight? Welcome to BGW Flash !!! Pretty much your choice. Some uses 30 w and 85/90 gear oil. Really don't matter as were not DRAG RACING. Lets face it even 22 mph is quick on a cart but some would disagree so we won't go there. I use mine for work horses and to save the "ole man steps" and you are talking about a 1981 so I'd say be easy on the "ole girl" and enjoy carting. I started with 1 and now have 5 ask my wife !!! LOU
racin161 Gone Wild Join Date: Feb 2011 Posts: 1,515

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