I am now behind the wheel of a 2012 Audi S4 with GIAC AWE Stage 2 (~425hp) so I want to protect the engine with the best slick stuff!
Warranty and long drain intervals are not a concern - the Stage 2 upgrade killed most of the powertrain coverage and my OCD personality means that I will never go more than ~7k miles between oil and filter changes. My typical go-to oils are from Redline or Motul (8100 and 300V). Mobil 1 0W-40 is also a consideration but the low(ish) 3.8 HTHS has me a bit worried.
After some research it sounds like intake valve carbon deposits are a big issue for these DI VAG engines so some have suggested a mid or low SAPS oil. Is it true that low SAPS oils will keep the valves cleaner? Is the only downside to low SAPS the lower TBN and reduced performance over long OCIs?
What makes the VW approved oils so special, I.e. why use Motul Specific 505.01/502.00 rather than 8100 X-Max or X-Cess?
Warranty and long drain intervals are not a concern - the Stage 2 upgrade killed most of the powertrain coverage and my OCD personality means that I will never go more than ~7k miles between oil and filter changes. My typical go-to oils are from Redline or Motul (8100 and 300V). Mobil 1 0W-40 is also a consideration but the low(ish) 3.8 HTHS has me a bit worried.
After some research it sounds like intake valve carbon deposits are a big issue for these DI VAG engines so some have suggested a mid or low SAPS oil. Is it true that low SAPS oils will keep the valves cleaner? Is the only downside to low SAPS the lower TBN and reduced performance over long OCIs?
What makes the VW approved oils so special, I.e. why use Motul Specific 505.01/502.00 rather than 8100 X-Max or X-Cess?