Wow, there are some serious misconceptions about turbos. They do not run so hot they....breakdown the rubber parts of the engine. I thought i had heard it all. They certainly don't need 'special turbo oil'.
Although the reliability on turbo has been improved drastically in recent years, but I still won’t get one unless there’s no other choices.
In recent years? Turbos have been VERY reliable for decades...
By using turbo in the car the high temperature will always be an issue. Do you keep the engine idling for a while to let the oil circulating and cool down the turbo charger a bit before you shut off the engine?
No. Not even on hot days. You only need to 'cool your turbo' if you have been "getting on" your turbo. If I lived at the end of a freeway ramp, I might idle for 60-90 seconds before shutting the car off. But normal, just driving around city streets at 25-35 mph, isn't making your turbo too hot unless you're really gunning it from the stop lights. And if you were gunning it, then you drive normally the last couple miles to your house. Pretty easy actually.
To me, I hate to have additional turbo components which eventually may need replacement when the vehicle is getting older.
Most modern turbos will last just as long as your engine will. I've had 7 turbo cars, including the current Volvo. One of them needed a rebuild, not even a replacement. That Saab convertible I bought used with 30K miles on it. I don't even fault the turbo there, I shouldn't have bought that car. Those first 30,000 miles it began life with were as ....a rental car.
As Consumer reports once said when we were discussing this on the Saab board: turbos are no more or no less reliable then the engine they are mounted to.
Let me see if I can find that quote...
"Sometimes the weak spot of the powertrain can be the transmission rather than the engine. These transmission problems could give the appearance that the addition of a turbo to a car model hurt reliability, but that might not tell the full story.
Consumer Reports’ reliability surveys have also found that manufacturers with a lot of experience building turbocharged engines—Audi, BMW, Porsche—tend to have more reliable powertrains. But manufacturers new to the turbocharged market and without as much experience designing these engines are still working out the kinks."*
Not the exact quote I was thinking of as it was from a much older article. But still makes my point. And bringing this talk specifically back to Mazda on that quote: Yea, Mazda might be new to the turbo game, but the Mazda powertrain has proven to be pretty reliable.
This is absolutely a hill I will die on: Turbo equipped engines are no more problematic then any other type of engine.
I am looking for a 3rd car now and I'm hoping to land, you betcha'...something with a turbo.
*Source:
Are Turbocharged Engines Less Reliable? - Consumer Reports