850 starts burning lots of oil from nowhere?

Post by **abscate** » 07 Apr 2021, 07:53

I saw huge variation between pennzoil synthetic 10w-30 and Castrol high mileage 10w-30 , all attributable to bad valve stem seals.

SomeGuy537 · Post by **SomeGuy537** » 07 Apr 2021, 08:59

abscate wrote: 07 Apr 2021, 07:53 I saw huge variation between pennzoil synthetic 10w-30 and Castrol high mileage 10w-30 , all attributable to bad valve stem seals.

I think my valve stem seals are bad too. Which oil worked better for you?

Post by **abscate** » 07 Apr 2021, 09:38

SomeGuy537 wrote: 07 Apr 2021, 08:59
abscate wrote: 07 Apr 2021, 07:53 I saw huge variation between pennzoil synthetic 10w-30 and Castrol high mileage 10w-30 , all attributable to bad valve stem seals.
I think my valve stem seals are bad too. Which oil worked better for you?

The Castrol High Mileage Synthetic.