Quote Originally Posted by tcrideshd View Post
Most of the newer have an external trans filter now. As for an oiler for the turbo, most go well over 300 k in miles without issue, you may not need power such as in a diesel truck but the efficiency of an engine with a turbo makes them desirable. As for the 1985 truck, I was running gmc at the time so never had one with the 6.9 yet the international engine was well regarded and the 7.3 offering was and is still the gold standard. What a turbo does to any engine is what anyone wants to boost economy and performance, get good air to the engine for improved burn. You can change air filters to do this but not quite as much. But the fact is if it has a torso it will run better and more efficiently. It’s ok if you don’t like them, it really is but it’s not because they don’t make the product better.
I have a couple Toyotas. And they both have internal filter only. A good drain works well enough. Although your only swapping out lil more than a third of the fluid. Which makes you have to drain it again to get a higher ratio of new to old fluid. No beef with turbos here at all. But I rather have a 6 cylinder with no turbo than a 4 with turbo. Gas mileage be damned. Lol.