If there is no big hangup with mfg approval then why did you spend the remainder of your post saying to use mfg approved oil?
11 years later— great info.I can understand Jeff's point about each company stating that their oil (or any other product) is the best.
Mobil 1 has been around a long time and is certainly a good oil.
It took a beating in discussions on this forum for a long time, but I never saw anything concrete about it not being a good oil.
Which brand will protect best?.....I certainly have no idea.
I know that Jeff communicated with Dave at Redline about his particular car and the tweaks he has done with it.....and Dave Recommended a particualr oil in their line-up to him.
I would certainly say that Dave at Redline would know far better than I would which oil in their line-up would be best for his application.
I would also think (and I am not qualified to state) that the Redline Oil would be a good oil.
However, for Dave to know, or even suggest a competitor over Redline would be expecting something not reasonable.
I don't think Jeff expected that......I would expect Dave to be very knowledgeable about Redline oils....and which of their oils would be the best for a given application.
There is a LOT of opinion out there........and lots of people on the internet spouting a lot of "self censored".....and some folks who really know their stuff....I really enjoy threads like this one that deliver information from those with experience and knowledge that I will never have.