Prntckt
Well-Known Member
Lifetime Member
I switched my diffs to 75/140 synthetic at my last oil change. I couldn't believe what a difference it made in gear noise.
I would recommend it. Keep in mind I'm just a guy and learning not a tech. That being said after experiencing how much quieter the driveline is after I changed to 75 140 I wish I would have done it on my first service. I was able to get it all changed out with 1qt. I did buy a hand pump that screws on the top of the quart bottle and it took about an hour. I recommend getting the pump if you don't have one already. When filling you can use the flexible hose to get past the ring gear visible right inside the filler port. It's a quick job but I wanted to let the differential drain for a long time to get as much of the old oil out as I could. All in all with the purchase of the pump I was around $30.00. Post your findings if you chose to switch to 75 140. I'd like to see what you think.I'm doing my first service this week...was planning on using the Honda GN4 10w30 oil-wise , but was wondering if you guys think its worth it to also do the diffs with the 75/140 on the first service? If there is a noticeable difference thinking I should maybe just do it now...
I'm jumping on the hype train - I've got a quart of the RP 75/140 coming, so I'm just gonna switch the front/rear fluid with the first oil change. Good idea about the pump, I might have to grab one. I've got the same flotool hose that Rob had posted in his last post so going to see if that works first.I would recommend it. Keep in mind I'm just a guy and learning not a tech. That being said after experiencing how much quieter the driveline is after I changed to 75 140 I wish I would have done it on my first service. I was able to get it all changed out with 1qt. I did buy a hand pump that screws on the top of the quart bottle and it took about an hour. I recommend getting the pump if you don't have one already. When filling you can use the flexible hose to get past the ring gear visible right inside the filler port. It's a quick job but I wanted to let the differential drain for a long time to get as much of the old oil out as I could. All in all with the purchase of the pump I was around $30.00. Post your findings if you chose to switch to 75 140. I'd like to see what you think.
Just drained and filled both differentials with Mobil 1 75w-140 lube. Easy job using a quart bottle pump from Amazon. Only issue, and not really a problem, was the Honda OEM skid plate in front was factory installed up side down. After removing about 8-9 bolts the skid was positioned so the drain hole for the front diff was aligned with the drain on the diff. Yeah i did the front drain and fill with the skid off, way easier then through draining hole in the skid. There was very little metal particles in the factory OEM gear fluid when drained and a test sample placed on a clean white rag (all very scientific I must say). This was expected, as would be from any new vehicle breaking in. The Mobil 1 75w-140 is suitable for all hypoid gear cases, has GL-4 and GL-5 cert., and runs about $25.00 at the local parts store.I would recommend it. Keep in mind I'm just a guy and learning not a tech. That being said after experiencing how much quieter the driveline is after I changed to 75 140 I wish I would have done it on my first service. I was able to get it all changed out with 1qt. I did buy a hand pump that screws on the top of the quart bottle and it took about an hour. I recommend getting the pump if you don't have one already. When filling you can use the flexible hose to get past the ring gear visible right inside the filler port. It's a quick job but I wanted to let the differential drain for a long time to get as much of the old oil out as I could. All in all with the purchase of the pump I was around $30.00. Post your findings if you chose to switch to 75 140. I'd like to see what you think.
Same here, with allot of road driving between farm fields the 75w-140 mobile 1 oil should be everyone’s first thing done after purchasing75w-140 Mobil 1 used in front and rear differentials here. Definitely quieter.
You're good anyway. Been running that in my diffs since new and I plow all winter.Just going to do my differentials today on my P1k3 at just over 600 miles. I will be using Mobil1 synthetic 75/140. I do not plan to use the buggy during the winter months so the thicker stuff should be fine I think.