Originally Posted By: edhackett
This is from page 416 of your owner's manual:
The 20 in 0W-20 indicates the viscosity characteristic of the oil when the oil is at high temperature. An oil with a higher viscosity (one with a higher value) may be better suited if the vehicle is operated at high speeds, or under extreme load conditions.
I wouldn't use any oil with a HTHS < 3.5 on the track.
Ed
I agree. I'd have to give yet another vote to M1 0w40. It's a somewhat lighter 40 grade and is really tough to beat overall.
I'm using it in the 2.5L Subaru and it's great. Quite and smooth, possible more so than the M1 HM that was in before.
This is from page 416 of your owner's manual:
The 20 in 0W-20 indicates the viscosity characteristic of the oil when the oil is at high temperature. An oil with a higher viscosity (one with a higher value) may be better suited if the vehicle is operated at high speeds, or under extreme load conditions.
I wouldn't use any oil with a HTHS < 3.5 on the track.
Ed
I agree. I'd have to give yet another vote to M1 0w40. It's a somewhat lighter 40 grade and is really tough to beat overall.
I'm using it in the 2.5L Subaru and it's great. Quite and smooth, possible more so than the M1 HM that was in before.