Castrol FS High Mileage oils

[fordman65]

Does anyone have information on the drain interval for these oils?
Any weight of their oils.
I can not find that information anywhere.
In my non scientific opinion, I am thinking 7500 to 10,000 miles.

Thank you.

 

[Linctex]

It depends more on the engine than on the oil.

 

[JohnnyJohnson]

Their Gold Jug Castrol Extended Protection is rated for 15,000 mile OCI's.

Its right on the Jug what ever that's worth.

 

[mclasser]

UOA will be your best bet but a quality syn like Castrol should have no problem doing 7500 miles.

 

[Lethal1ty17]

On 5w20 Edge EP I've had UOA's at just over 11k with good results. Currently closing in on 10k for the current fill of it.