Originally Posted By: edyvw
Originally Posted By: dbrowne1
Originally Posted By: edyvw
There is NO WAY I would use 504.00 except in CA!
Why not? It holds up just fine on a 5K OCI and it is significantly better in terms of intake valve deposits on DI engines.
Like I said, for manifold injection engines, yes, definitely use a 502.00 oil. But for the newer DI engines, there is a very good reason to use a 504.00 oil.
Well someone posted that engineers at Redline said in an e-mail that there is no any proof that Low-SAPS oil reduces carbon build-up.
Also, for carbon build up most important is Low NOACK, which 504.00/507.00 oils do not have.
For example PU 5W30 Euro Low-SAPS has NOACK 11%.
There is
zero correlation between NOACK and DI engine valve deposits. None. Zip. That is a theory that has been discussed and debunked here for years.
I have no idea about any second-hand translation of what the "engineers" at Redline supposedly said in an email, but I don't really need to guess at that because Lubrizol (which is a Fortune 500 company) did a study that pretty convincingly proved that low SAPS oils do in fact reduce valve deposits on DI engines. A lot, in fact.
Lubrizol Paper - Go to Page 19
That paper has been around since 2006, none of this is news.