Last weekend I changed the fluids in my 2016 xmr 570. I used Mobil 1 75w90 and 75w140. I noticed both of these to be clear and relatively thin gear oils and didn’t think much of it.
This weekend I changed the fluids in my GF’s 570 with the same Mobil 1 products. I started with her gearbox oil and used the remainder of the 75w140 in last weekends bottle. Then opened the new bottle and began to pour and noticed this bottle of fluid had a almost honey color and seemed a little thicker and came out of the bottle slower… WTF?
I just continued and used it in her rear diff as well.
So now I’m thinking what the heck is going on here. I looked at both bottles of 75w140 and they are exactly the same with the same barcodes as well. Is this normal… could one be older than the other… do I need to be concerned as I mixed the 2 in her gearbox?
Thanks peeps
