[Jay S]

Most those 5w50 full synthetic oils were formulated for modern high performance cars. Especially German made engines, some supercharged stuff over here. From what I recall they are formulated more for those types of platforms, and run lower zinc and P for emissions equipment. Personally I think for your oil clearance the 5W serves no purpose unless your are operating it in very very cold Arctic weather. The VR1 10w30 would likely serve you better, 20w50 VR1 might be fine oil too, but really need more details about the combo. 10w30 should be fine with those oil clearances yet. This is a oil sample from a Roush 5W50 made by Valvoline, don’t know if it is exactly the same as the 5w50 your looking at, the target markets are the same though. Pretty low on some of the antiwear properties, really high anti-friction moly, with moderate detergent levels.