Is Motorcraft still the choice for oil change?

[Beach-GT]

I think oil gets contaminated with corrosives once it is in an engine and it is wise to change it yearly. It is not like storing it in a clean container.

 

[nautoncall]

I think oil gets contaminated with corrosives once it is in an engine and it is wise to change it yearly. It is not like storing it in a clean container.

But if you send a sample out of of the reservoir and they say it's still good so why change it based on time alone? That's science not "just because".

 

[Kayvan]

Periodic use, with temps above 220 will boil off condensation and burn off any fuel

Lack of use has it's issues too

 

[BlackICE]

Periodic use, with temps above 220 will boil off condensation and burn off any fuel

Lack of use has it's issues too

:agree:

 

[PeteK]

I think oil gets contaminated with corrosives once it is in an engine and it is wise to change it yearly. It is not like storing it in a clean container.

The Total Base Number (TBN) tells you if the oil is becoming acidic. Motor oils have base chemical buffers (as in basic pH) in them to neutralize acids that result from combustion and oxidation of the oil. If the TBN gets too low, that's a reason to change the oil. Blackstone monitors this for extended oil changes (it costs $10 more than the $25 basic analysis, but you definitely want that test if you are extending oil changes like I am).