OCI with synthetic oil

[BlueOvalFitter]

1996 Toyota Corolla,121K miles
What is a good OCI change interval for this vehicle? I'm using Super Tech synthetic oil (10W30),Purolator gold filters,and it is driven 60% interstate,40% city.

 

[tig1]

I do 10,000 mile OCIs.

 

[Warstud]

It's hard to say with Supertech I haven't seen any used oil analysis on the oil. I would guess 5000 to 6000 miles on that oil.

 

[lewdwig]

I'll second the 10,000 mile OCI.

 

[jmb106]

I would go w/ the "Normal" service schedule in your owners manual. Just because you are using a syn doesn't mean extended drain intervals. Syn work best at the extremes IE Heat(Race Track) & Cold (Sub zero) thats where they shine, not on a daily driver. If you are looking for extended drains you need to step up to Mobil 1 Extended Performance or any Amsoil product that have the add packs designed for extended drains.There nothing wrong w/ the oil you are using it's just not designed for extended drains.
joe

 

[GROUCHO MARX]

I see no reason to push any oil close to its limits.

6.5k OCI

 

[ZZman]

I bet it has a weak add pack.

I would stick with 5-6,000 mile OCI's since the few reports I have seen do not list TBN numbers.

 

[FastSUV]

If you were gonna do 6k intervals on supertech full-syn, then what is the point of even using the synthetic? Why not do 5k on SuperTech conventional and call it good?

 

[StevieC]

8K miles on Supertech would be my comfortable OCI.

 

[Gary Allan]

I saw the typical service it sees, but not the annual mileage. With this oil, if it's not too far above 12k, then 6 months would probably work.