Valvoline Syn power 5w30 in longer (15,000mile)OCI's?

[Stanley Rockafeller]

Is this safe? I've been running this stuff for the past while (8,000kms)and the car seems to like it...can I push my luck and try extending my OCI to a 10-15,000 miles CI with a filter change in b/t as well as a top up?

TIA

P.S. car is a 97 Escort with 181,000kms on it, and doesn't leak or burn any synthetic oil

 

[Stanley Rockafeller]

P.P.S.
Also using Mastercraft (Ford oil filters) Made by Purolater

 

[Bagger_Matt]

I would do a UOA at 7500 miles and decide if the oil is up to longer changes.

 

[Audi Junkie]

Why bother?

 

[Bobert]

TBN is an 8 for Synpower 5w-30. Not sure it would go 15,000 miles. It might be able to go 15,000 kilometers if that's what you meant, but probably shouldn't push it much further.

 

[TallPaul]

Couldn't he boost it along with Lube Control?

 

[pitzel]

Maybe try Esso XD-3 0W-30, a $4/L motor oil that has a TBN of 12 and is built for extended drains.

Should be abundantly available at your local Imperial Oil dealer in Calgary.

 

[sdude2k2000]

"P.P.S.
Also using Mastercraft (Ford oil filters) Made by Purolater"

^-- don't you mean Motorcraft filters?