Originally Posted By: artificialist
According to some BMW owners, using Castrol 5w40 leads to more varnish than other synthetic oils. You can search BITOG for BMW engines with the valve covers off. I think this doesn't happen with the Castrol 0w30 Euro or Castrol 0w40.
Yes, I was trying to say that, without coming out and saying it. But, there's no point in sidestepping the issue when there's a preferable product from the same company at the same price on the same shelf.
According to some BMW owners, using Castrol 5w40 leads to more varnish than other synthetic oils. You can search BITOG for BMW engines with the valve covers off. I think this doesn't happen with the Castrol 0w30 Euro or Castrol 0w40.
Yes, I was trying to say that, without coming out and saying it. But, there's no point in sidestepping the issue when there's a preferable product from the same company at the same price on the same shelf.