But I love them. Back in the 50's I worked for a construction company that built bridges. One would build a coffer dam to build the pier footing and frame up the pier. The steel sheeting that formed the coffer dam leaked and there were two large pumps with Chrysler Industrial Hemi engines. One ran continuously and the second started up if the first shut down for any reason. Our work hours were "daylight" and those engines ran without skipping a beat for months on end. With all the wood bracing and shoring blocking escape I wouldn't be wring this if the Hemis had failed. One hears of performance but not much on durability of these great old engines.