Your engine pre lube system is working perfectly on my 1965 6V92TA Detroit Motor Coach. At first I was skeptical whether the D-Kit with the 4.38x16 inch storage tank had the capacity to completely fill and pressurize the oil system on our motorhome. But within 10 seconds after turning the key on I have over 35 psi showing on the oil gauge. And the installation couldn't have been simpler. I would definitely recommend the AutoEngineLube kit for any motor home regardless of engine size.