I use the $26. castrol,pensoil,qstate,valvoline full synthetic oils in my car's. Qstate now has a part synthetic with zinc in it for about $16 deffy is what there calling it(5 qt jug, as are the others at wally world) I dont know how much the brad pen is or the redline,but I realy cant see them being any better in the long run for the $.but thats me,Ive seen engines run on redline that had issues,was it the redline?? did it not address the issues this engine had?? I dont have a clue as the owner would not change brands, as many people get the "I use it so it's got to be the best" mentality. well I learned long ago not all oils are created equal. thus I mix&match all of my oil. I did put the deffy in my kids scion,my wifes honda& my bug this last oct.I cant realy tell any thing other than a few min longer to warm up from it being a little thicker.but the kids scion does run quieter with it,it may of had thinner oil before I put 10-30 in it.5-20 in mine, but it is a mix of half the defy&half 5-20 castrol edge.
many people think they for some stupid reason need a racing oil.well if there not racing & dont keep it changed ad rececars do and need there hurting more than helping.the racing oild dont have the addtives that are needed for long term usage and all the thremol cylcing it go,s through. and why??? do they think it will make it a race motor?? give it more power?? last 500 miles?? think, a 4 cylinder,not a lot of power....need racing oil??nope.there are plenty of engines with way more parts&power that just use off the shelf oil and last a long time. Is your motor worth it in the cost?? yes .but can you do better &cost less?? most likely.and with the cheeper than race oil you can change it more often¬ have to go on a diet that weekend.
one more thing. if you have an issue, a problem the racing oil will not fix it.neither will the std or synetic oil.but a good synthetic oil may prolong the time till you have to do something.and it may not.
if your running a turbo or added power additive you may need addtional protection.but I just dont see it in a vw engine in a non race car,not even a racecar under 240 hp non boosted apps. Ive built plenty of 800hp&up engines.none used exzotic racing oil.most of the time they went out the door with kendall/bradpen gt1. no oiling issues at all. I beleave we used valvoline racing oil in our 800+ ci promod...because it was sponsered to us.that engine is in the 100000.00 range. any racing oil would of worked just fine. these vw's are not racecars.