is synthetic really that much better then conventional or is it just more hype. also what is the difference in high mile oils. what do u guys use and recomend.

 

a search works great
https://www.f150online.com/forums/se...archid=1638861

 

You provide nothing ? No motor/miles . Don't expect specific info for your application if you don't provide any yourself . Comon , that's a no brainer.

It depends on where your at in miles and how the truck was treated - along w/what oil was used in the past.

If you run a premium oil on an older engine , it will clean it out , but theres a follow-up procedure when doing so.

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