I prefer gaskets over RTV. I guess I like cleaner installs. I took the Rubicon to Moab last weekend and had to top off the coolant reservoir before I went. There and back was probably just over 250 miles. When I got back I noticed the reservoir was back down to half way again, and it's a much bigger reservoir than in the Spider. Quick inspection showed a possible gasket leak around the water pump. At least on a Jeep Wrangler a water pump install is a less than an hour job. Also broke a brake line there and had to limp home. If you have to you can drive without touching the brakes much.I just took my water pump off Saturday while I was finishing up stripping the block. There is no gasket, just RTV to seal it.