Originally Posted By: SilverFusion2010
Originally Posted By: JoelB
3 tenths of an mpg? You have to be kidding...
If changing viscosity effectively changes the intake valve timing I'd give this a plausible.
Otherwise....bupkus!
I'm just reporting what the DIC says. Take it or leave it. But the engine ran MUCH better with a little 5w20 mixed in. It's called viscosity tailoring , been done for decades, and it appear to be much more important with hydraulic VVT.
Originally Posted By: JoelB
3 tenths of an mpg? You have to be kidding...
If changing viscosity effectively changes the intake valve timing I'd give this a plausible.
Otherwise....bupkus!
I'm just reporting what the DIC says. Take it or leave it. But the engine ran MUCH better with a little 5w20 mixed in. It's called viscosity tailoring , been done for decades, and it appear to be much more important with hydraulic VVT.