'24 Ford Transit 250 3.5 Castrol GTX HM 9450 miles

[unkillsam]

This is the 2nd UOA on my Ford Transit sitting at 19450 miles on the motor and 9450 miles on the oil, which was again Castrol GTX HM 5w30.

I am much more pleased with the results this time, the oil stayed within grade. Alas, I had switched to Quaker State FS already after this last oil change but will be interested to see how that UOA turns out.

Clearly this semi-synthetic is good enough for a 10k oci with my 12 qt capacity vehicle!

 

[fantastic]

Clearly this semi-synthetic is good enough for a 10k oci with my 12 qt capacity vehicle!

Agreed
The results speak for themselves on that. Thanks for sharing

 

[OneLonelyBurrito]

Clearly this semi-synthetic is good enough for a 10k oci with my 12 qt capacity vehicle!

What is the recommended OCI from Ford with a 12qt sump?

 

[unkillsam]

What is the recommended OCI from Ford with a 12qt sump?

15k

The oil life monitor confirms this. Its between 30 to 35 % changing it at 10k

 

[OneLonelyBurrito]

15k

The oil life monitor confirms this. Its between 30 to 35 % changing it at 10k

A 15k OCI doesn't really seem unreasonable based on this UOA and the size of the sump. Do you plan on extending it out to 15k or just run 10k OCI?

 

[unkillsam]

A 15k OCI doesn't really seem unreasonable based on this UOA and the size of the sump. Do you plan on extending it out to 15k or just run 10k OCI?

So my original plan was to test Castrol GTX to see if it was good in this vehicle for a 10k oci. The 1st UOA came back out of grade but still a heavier 20 grade.

This 2nd one came back fine. However I had already switched to QS Full Synthetic.

No matter what oil I use im not going to push more then 10k to 12k. Im using Purolator One filters that got updated from a 10k to a 15k filter but I like to be conservative.