So, when talking about GDI vehicles, I assume you're concerned about fuel dilution? So, shorter interval to keep the dilution down? Right?
Wouldn't a better HTHS help, too?
You contacted an expert - wasn't your question/concern answered in that dialogue?
I'm excited to see how the HPL does in the Volvo. I bought another case of it two weeks ago, because I plan to change more of my cars over to it. I've got a case and a half in my shop (after changing the Volvo XC over last month).
But I'm too cheap to dump the Mobil 1 0W40 that has fewer than 1,000 miles on it, so the HPL will go in when those cars are due for a change.
The XC will be an interesting use case. It's a daily driver that's got nearly 280,000 miles on it. Runs great. Has rebuilt injectors (thanks to
@Trav ) and good compression across all 5. Has a clean PCV system (the Volvo Achilles' Heel) and no external leaks. There is varnish in the engine (saw it when the pan was off fixing the PCV) but no sludge. Uses a bit of oil. Or, it did. So far, it's using less with HPL.
That's a big change for the XC.
I'll track consumption, pull a sample and change the filter at 5,000 miles. We will know more then.
My approach to the XC and her little drinking problem had been to find a cheap A3/B4 oil. I settled on Castrol 0W40 at $22/jug from Amazon. The oil loss is either past the rings, or perhaps past the turbo seals. Don't really know. What will be interesting, and why I'm excited to try the
@High Performance Lubricants Euro oil, is to see the effects of high esters - will it permanently slow down the consumption by cleaning?
The Castrol was cheap to buy, but didn't use the quality components, or base stocks, that HPL does, so, while the engine didn't suffer any damage, it also wasn't seeing any improvement.
Time will tell.
The S600 used to go the whole 10,000 mile OCI without consumption, but I've also got a bit of a consumption problem on the S600 now, a quart every 5,000 miles. It's a leak and I know where it's leaking from. Unfortunately, I have to pull the engine to get at that particular leak, which isn't an easy job on the V-12, so...