Gale Banks is one of the most brilliant minds that hot rodding has ever known. He’s succeeded virtually every single area imaginable. While we know him for this diesel work over the last 20 years, the guy has set a load of records in Bonneville, he had a twin turbocharged top fuel dragster in the 1980s, and his crowning achievement has been the development of an engine platform for US military vehicles.
Not that you were lacking in Gale Banks knowledge but that kind of sets the table for what you will see below. These are four fascinating videos that Banks stars in that tackle an interesting topic. Are aftermarket differential covers worth it? There are a load of them on the market with slightly different designs and shapes but are they actually helping? The prevailing sales line with these covers is that increased fluid capacity is a good thing and that they allow for easier fluid changes, etc. BUT, do they actually work or even more shockingly, are they actually harming the performance of your truck?
Banks has no dog in the rear differential cover fight. He is not trying to prove that his is better. He is simply making the video to test out how they work against a stock cover. Its not a Banks Power sales pitch, it is a brilliant guy exploring a topic that we have never heard of anyone checking out at this level before.