From a variety of sources, I believe the original lube might be dino oil and that has a very short change interval. If full synthetic as Drew states, permanently lubed unless contaminated or the chassis is under an ambulance.
The lube I came up with, after lots of investigation, 75W-140 Full Synthetic. I bought ours at Walmart under Supertech name, about $11 a quart bottle. Comparatively that's a very good price for those specs. Don't get the less expensive "blend" or the still cheaper dino oil. I want to say 5 quarts, which is about all a Walmart Supercenter stocks in that grade.
There's only a Fill/Level plug, no Drain Plug. For that reason, I decided NOT to pop the differential cover off to drain it, rather suction the lube out.
When we got home from a trip (so the lube was warm and agitated) I was ready with my "Oil Boy" which boaters use to suck the crankcase oil up and out of inboard engines through the dipstick.
Easier things to do than get that thing under there then pump it, but it wasn't really too bad.
Removed the Fill Plug, which is magnetized and noticed no shavings or chunks of steel stuck to it. Made sure it was full, sucked it till the Oil Boy couldn't get any more, kept re-positioning the suction tube to be sure. Then I emptied the OB and measured the amount to see if it matched the owner manual capacity. It did, so I figured it had to actually be empty, and put the new Supertech Full Syn in.
The bottles come with a squirty spout, which I cut off to the largest size I could and still fit a piece of hose that'd fit into the filler hole. I was able to get the bottles upside down and squeeze, not too bad to do, but if I was going to do it again I think I'd find a way to hold the bottles inverted and then punch a hole in the bottom. Let gravity do the squeezing and allow time for the clingage to drain out.
I worked on big cardboard scraps over my concrete pad. Job's a little messy, so an old plastic picnic table cloth, free Harbor Fright tarp, something like that would serve well. Just roll it up and throw it out.
The lube I came up with, after lots of investigation, 75W-140 Full Synthetic. I bought ours at Walmart under Supertech name, about $11 a quart bottle. Comparatively that's a very good price for those specs. Don't get the less expensive "blend" or the still cheaper dino oil. I want to say 5 quarts, which is about all a Walmart Supercenter stocks in that grade.
There's only a Fill/Level plug, no Drain Plug. For that reason, I decided NOT to pop the differential cover off to drain it, rather suction the lube out.
When we got home from a trip (so the lube was warm and agitated) I was ready with my "Oil Boy" which boaters use to suck the crankcase oil up and out of inboard engines through the dipstick.
Easier things to do than get that thing under there then pump it, but it wasn't really too bad.Removed the Fill Plug, which is magnetized and noticed no shavings or chunks of steel stuck to it. Made sure it was full, sucked it till the Oil Boy couldn't get any more, kept re-positioning the suction tube to be sure. Then I emptied the OB and measured the amount to see if it matched the owner manual capacity. It did, so I figured it had to actually be empty, and put the new Supertech Full Syn in.
The bottles come with a squirty spout, which I cut off to the largest size I could and still fit a piece of hose that'd fit into the filler hole. I was able to get the bottles upside down and squeeze, not too bad to do, but if I was going to do it again I think I'd find a way to hold the bottles inverted and then punch a hole in the bottom. Let gravity do the squeezing and allow time for the clingage to drain out.
I worked on big cardboard scraps over my concrete pad. Job's a little messy, so an old plastic picnic table cloth, free Harbor Fright tarp, something like that would serve well. Just roll it up and throw it out.
