Hi
Its hard to say.
Previous to the M1 & VSOT fill, the car ran Havoline 10w-30 and FC20. It ran much smoother and "stronger" than the previous fills of GC.
Once the M1/ Valvo mix was added, it seemed a little sluggish but mileage began climbing.
I cleaned the MAF last night, and the drive home seemed more like the Havoline fill...lively throttle response.
I will drive another 150 miles today so will check in later with mpg.
Its hard to say.
Previous to the M1 & VSOT fill, the car ran Havoline 10w-30 and FC20. It ran much smoother and "stronger" than the previous fills of GC.
Once the M1/ Valvo mix was added, it seemed a little sluggish but mileage began climbing.
I cleaned the MAF last night, and the drive home seemed more like the Havoline fill...lively throttle response.
I will drive another 150 miles today so will check in later with mpg.