I`m wondering what affect (if any) that Synthetic oil has with a motor like mine. (the variable valve timing) I have PU 5W30 in it right now, and when I hold down the accelerator i.e getting up to speed, or passing somebody on the highway. I have noticed an almost low pressure turbo feeling now,that when I run conventional oil, I simply dont feel? In other words, I can feel the vvti kick in when using Synthetic, over conventional oil. Does this make any sense? Or am I imagining this?