IR ThunderGun Impact Wrenches any opinions?

So how do you guys go about lubing your thunder guns and what type of grease do you use? I am less than impressed by the instructions that came with mine. Its just a drawing of the gun with a picture of a grease gun pointing at the front and pointing at the back. I see what looks like a euro push pump type of grease fitting on the back but I have no clue what the hell they want you to grease on the front of it. Any ideas on this situation?

I think you're talking about the grease port. You'll need a needle tip grease adapter or a small grease gun that has a needle tip end. Don"t use a adapter that is like a hypodermic needle. Use some light bodied grease not heavy chassis grease. I use John Deere corn head grease but you can use most any light to medium grease. Give it a few pumps and turn the anvil back and forth. If it is dry and clacky sounding it needs more. Don't over grease. It's hard on the impact mechanism. tmm