Recent content by mt23

I didnt bring it into thick or thin. I take viscosities in other countries into consideration when making a decision for any engine

I take into consideration that: -The requirements or approvals by manufacturer have been met or exceeded -the W characteristic of oil is suitable for minimum temperature the engine will see - viscosities recommended for use in other countries, not neutering longevity for the sake of CAFE...

Carquest Premium 84712 in use 9,648 miles on 2009 Subaru Outback 2.5i with Valvoline Restore and Protect 5w30. Customer car with 232,000 miles. I rebuilt engine shortblock about 50,000 miles ago it had been run extremely low on oil several times and had failed head gaskets. Off/out: Carquest...

Late reply. Yes I have done this several times especially if Carquest Premium isnt in stock.

I've thought this too. Except that it doesnt matter if I use 20,30 or 40 grade. Same pattern with each

I still think cleaning or replacing pcv valve is next logical move. I have seen many subarus consume oil related to pcv valve including my own, even with less than 30,000 miles on the valve.

Beats me. It's always been that way for it too. More consumption at first, less later on. Opposite of what you'd expect. Once I started using HPL at extended intervals i realized its consumption would slow down greatly after 9-10,000 consistently. Currently 9,200 miles into using 10w30 No VII...

Correct.

In one of my subarus HPL consumption nearly stops after 9,000-10,000 miles, regardless of viscosity used. It behooves me to run HPL as long as possible in that engine for overall less consumption. See what happens throughout your interval.

When Valvoline Restore and Protect 5w40 becomes available this will be my go to off the shelf oil for EJ

Clean or replace pcv valve and monitor consumption

~20-25k or more on only Valvoline Restore and Protect including top off. First oil change was about 111k and had various top off with consumption ~1qt/1,000 or worse. 122k it was mid to end of 2nd Valvoline Restore and Protect.

It's a customers car. He bought it about 110k miles give or take. On Valvoline Restore and Protect interval 2 I took pictures of the sides of pistons from wrist pin access holes at time of timing belt at 122k. Currently 142k. It is either on interval 5 or 6 currently. 1st interval it got any...

I just did an 8k interval oil change on a 2007 Forester EJ253 that after 30,000 miles of Valvoline Restore and Protect went from over 1 quart per thousand to 1.25 quarts added over that 8k interval. Hang in there

this vehicle has dropped oil consumption from 1 quart or greater per 1,000 miles to 1.25 quarts in a 7,500 mile interval after about 30,000 miles of Valvoline Restore and Protect. I've dissected each oil filter, never any significant or abnormal deposits to see in filter. These pictures of...