Originally Posted By: webfors
Originally Posted By: lexus114
Originally Posted By: Thermo1223
Originally Posted By: tommersyip
Yup, a couple of coworkers are Subaru-junkies. That is pretty much the first thing they told me about the turbo. Makes sense. I just hope my wife sticks with it. She looked iffy when we spoke about it.
It is less important in the city and much much more coming right off the highway on a rest stop.
For instance if you came off the highway and sat at a traffic light for 1-2 mins then could pull into your parking spot I wouldn't bother waiting. The time you spent at the light idling has already cooled it off a significant amount.
Now if you were doing highways speeds then turned right into a spot, no light, no slowing down then I'd give it a little time, 30 secs max. I tend to increase the revs a tad just to pump more oil through it before shutting down.
This is what I do and it's worked well, I even do it on non-turbo cars.
I think that mentality is why my old turbo did so well. For instance if I ran into a convenience store for a pack of cigarettes,I would let it idle. (I since quit smoking)
Not everyone has the benefit of common sense
Stick with the synthetic recommendation for the turbo H4.. consider it a small insurance fee.
I agree with you,if I had a turbo today,I would use Synthetic as well.I was fortunate I suppose.
Although I think the oil was rated for turbo use then. The Pennzoil,and Castrol GTX. But that goes back many years,so I may be wrong.