3.1-3.4 cylinder head
Diagnosing and Correcting Leaks

GM 3.1 and 3.4 Cylinder Head – Manifold Issues

December 26, 2015

GM 3.1-3.4 Cylinder Head and Manifold Issues Confused about 3.1 / 3.4 Cylinder Head Types. Installers are not finding out until it is too late and the Cylinder Head is already installed. If you do own […]

contaminated oil
Coolant Leaks

How to clean engine coolant from lubricating system

December 15, 2015

Professional Installers offer the following information on clean engine coolant from the lubrication system. The following information applies only to certain situations and is not applicable for all engines. Consequently, These procedures may be attempted if […]