Found a good way to fill front knuckles for anyone interested. Thought i would check mine last night and had no way to fill them. So I came across an bottle of Fast Orange hand cleaner that I had bought at Walmart. It pumps the heavy hand cleaner out just fine so I thought why not. It worked great on the thick stuff I use from Mobil. No mess and pumped it full with no guess work. All I used was the pump part after purging the cleaner out.