have an 01 cobra. filling diff with fluid and am getting aggravated. I have a long hose plugged into the diff and the other end plugged on the bottle nipple(using royal purple). when I squeeze, I don't get very far cuz not a lot is getting in, hence the issue, b/c the pressure i'm applying hose pops off the nipple, and most of the fluid has ended up on the ground. *sigh*.......any ideas and help would be very appreciated.