Don't mean to turn this in to and additive thread, but I've started using Diesel Rhino additive in my Hilux pickup. I think it has made the engine smoother and quieter, but what I can say for sure is that it smokes a lot less. Before if you floored it, you could see lots of smoke in headlights behind, but now it's pretty clear.
Surely if it smokes less, it must be better for the engine?
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