Anyone have positive experiences with the 6 cylinder Toyota RVs. I read no positives in these threads about 6s. I had a Camry with 250K on it that ran like new. I know there would be more stress on a rig hauling so much more weight, But I loved that engine. What goes wrong with them? Also wondering what kind of gas mileage I might get if I gambled on the 6 instead of the 22r or re?