- Joined
- Jul 2, 2007
- Messages
- 5,294
Had been using Conoco-Phillips oil in the Forester since about 2011, mainly Kendall GT-1 syn blend and then the Motorcraft blend when Kendall disappeared from retail shelves. Recently put in Quaker State Enhanced Durability Synthetic Blend 5W30 Dexos licensed oil about a thousand miles ago. Have noticed that the valve train is now pretty loud upon cold starts (30 F or less) and through the first few minutes. Not just a tick but almost a slap or knock. It is a stark difference from before on the previous oils. Oil filter brand/type not different, using same blue Subaru OEM from dealer parts counter.
I don't see how it can be the oil, but that's the only variable in the equation that has changed.
I don't see how it can be the oil, but that's the only variable in the equation that has changed.