I have a '97 Olds Aurora Northstar 4.0L with a seaping engine oil pan gasket. If it were easy to do, I'd just put a new seal on it. However, the engineers kindly made it where it requires pulling the tranny to get the pan off. I'm considering Neutra 131 to swell this seal a little. I think it's the silicone/rubber "O-ring" type since it's an aluminum pan and block and I can see no gap or gasket. Would the Neutra 131 be as good a shot as anything else? Will this mix and work fine with Amsoil?