I race a 1993 BMW 325i with the M50B25TU engine in a series here in New Zealand. We have to keep our engines standard but are allowed baffled sumps and we can remove catalytic converters (mine has none).
Anyway, I've been using Castrol Edge 10W/60 but I'm considering moving to Redline Race 40WT or Vertex EXPERT RACING ZP 10W40. I've attached the product sheets for all these oils, does anyone have any real world experience or advice for me? The motor has over 130,000 miles on it so I want to use the oil that will keep it going under race conditions the longest haha. I can't really see major differences in the product sheet other than the race oils having a lot of zinc type additives.
Anyway, I've been using Castrol Edge 10W/60 but I'm considering moving to Redline Race 40WT or Vertex EXPERT RACING ZP 10W40. I've attached the product sheets for all these oils, does anyone have any real world experience or advice for me? The motor has over 130,000 miles on it so I want to use the oil that will keep it going under race conditions the longest haha. I can't really see major differences in the product sheet other than the race oils having a lot of zinc type additives.