Amsoil 5-30W Signature Series Vs Mobil 1 0-30W AFE

How do you define often? Every 3k? 2k? Do you still believe that changing oil every 3k will double your engine life compared to the guy who does his every 6k?
<5K

As for as your follow up Q…..really depends on the conditions said engine is operated. Idle time, towing, highway vs city stop and go.

A blanket statement like that can’t be made without details and justification
 
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<5K

As for as your follow up Q…..really depends on the conditions said engine is operated. Idle time, towing, highway vs city stop and go.

A blanket statement like that can’t be made without details and justification

You can believe what you want but 3k oil changes definitely won't double your engine life compared to 6k oil changes on pretty much any engine built in modern times.
 
I've seen that statement made a couple of times, but where is the evidence it is designed to do so? And mechanical shear? That means an inferior VM, does ExxonMobil really make this oil with a VM that is prone to mechanical shear?

The other issue I have is that most of the UOA on here are from Blackstone and they are incapable of distinguishing between mechanical shear of the VM and fuel dilution. Fuel dilution is much, much more common on most engines. Is there really a base of properly performed UOA that demonstrate this mechanical shear of AFE VII?
Dating back to my Carter AFB even though I have 3 GDI now 😷
 
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