Lightweight, high efficiency heat exchangers have been developed for engine and transmission oil cooling on heavy duty industrial applications. These heat exchangers are comprised of aluminum construction, and utilize recent advances in heat exchanger technology to obtain high heat rejection, low parasitic loss, and superior strength. This new development offers significant advantages over today's stainless steel plate and tube bundle oil coolers. Specifically, a 15-20% increase in performance is typical, while a minimum of 50% weight savings is expected. This innovation has been released for high volume production, and represents a major benefit for our customers.