Which dealerships only recommend the API Certified XL oils and to follow the mfg OCI? Here is a quote from GM: “The New Vehicle Warranty would not be void simply because an owner failed to use proper engine oils or did not perform maintenance at the prescribed intervals. Warranty applicability is contingent upon the cause of failure.”quote:Originally posted by Big Bear:
Sure they recommend their XL series API certified oils, and to follow the mfg OCI, not Amsoil extended drain intervals.
Service Policies and Procedures Department,
General Motors Corporation “
Why? AMSOIL has made these recommendations for 38 years without a problemquote:Originally posted by Big Bear:Telling someone to use Amsoil for 15K without a change in a new $90,000 motorhome is poor advise.
Is this opinion or fact? If fact, please post your reference. AMSOIL says you can begin AMSOIL and extended oil changes immediately. This is what the Texas State Police do. No problems.quote:Originally posted by Big Bear:If you have a new car, it is wise to follow the OCI in the owner's manual,because during the 1st 25,000 to 50,000 miles on a new engine is where you are going to have most of your break in wear.
The AMSOIL EaO oil filter traps more and smaller particles than other filters. Do you have a reference that those break in materials will not be trapped by the filter or cause a problem?quote:Originally posted by Big Bear: No oil filter, not even the Amsoil EaO Oil Filter is going to trap all of that break in wear material, some of it is going to be dispersed and held by the motor oil.