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Thankfully, I have no consumption issues as of now. I would like to keep it that way. My goal is to make my decision based on the quality of the oil only. I do not want to factor in price. In reality, if I pay 50% more for oil X, that is $9.00 a month for the peace of mind that I bought the best...

I have been pleased with Amsoil in the past and I like both of these options for my car. What would you folks suggest? The car is a 2006 Audi S4 w/ a Conventional Injection (Manifold injectors) 4.2L V8. It definitely sees its share of high RPM. With summer comming quickly, Las Vegas will soon...

I have been pleased with Amsoil in the past and I like both of these options for my car. What would you folks suggest? The car is a 2006 Audi S4 w/ a Conventional Injection (Manifold injectors) 4.2L V8. It definitely sees its share of high RPM. With summer comming quickly, Las Vegas will soon...

Well based on many factors including price, availability and reputation, I decided on the Amsoil AFL and a 5k mile drain interval.

Well based on many factors including price, availability and reputation, I decided on the Amsoil AFL and a 5k mile drain interval.

What would be the opinion of using Rotella 15w-40 and a 2500 mile OCI vs one of these higher end synthetics and a 5000 mi OCI?

Didn't see it came in a 5L jug until now. I wonder what the PC price is on it.

What kind of drain interval should I be using with these HDEO's?

So, I have been giving more thought to the HDEO idea. It looks like Delvac has the longest life expectancy due to it's high TBN of 12.0. Here are they data sheets for the HDEO's in question. Rotella Delvac Delo And the default for this car in most circles, the Lubro Moly What kind of OCI...

Originally Posted By: lipadj46 It's not available yet but the old Rotella T 5w-40 is a great oil. What is that called? I can't seem to find it on their website.

What about Rotella T6 5w-40? The 15w stuff scares me as it does get quite cold here fo most of the year, at least at night.

Originally Posted By: Audi Junkie Fuel additives won't help a DI engine since the fuel is introduced after the valves. This is not a direct injection engine.

Also, I use LC20 and FP Plus. I have not started the FP Plus on the car as I want to change the fuel filter first. But, I have been adding an ounce of LC20 every 1000 miles so far.

Well, I am still under CPO warranty. So, I guess there is something to be said for using VAG approved oils. Also, it is pretty cold here right now. So, I think I will try out the LM 5w40. It is readily available at the place I buy my parts online. They sell a nice kit with the filter for cheap...

Originally Posted By: Gary Allan Quote: Are those deposits due to FSI (direct injection) or oil problems? Both ..I guess. If it didn't have direct injection you would never see that level of build up due to the fuel wash. If the oil didn't volatilize all that junk ..you wouldn't see that much...

Originally Posted By: BobFout Dino isn't allowed in VAG engines anymore (hasn't been since 2000). A good HDEO for that motor would be RTS 5w40. Where can one get this oil? Are those deposits due to FSI (direct injection) or oil problems?

Originally Posted By: BobFout Dino isn't allowed in VAG engines anymore (hasn't been since 2000). A good HDEO for that motor would be RTS 5w40. Is that Rotella?

Originally Posted By: Audi Junkie I still like cheap HD oil, especially in your climate. Especially. I just leave the belly pan off so changes are a breeze. Cheap HD Oil? Sorry, new here.

Originally Posted By: BobFout Is that with the turbo V8 sparker? It's a normally aspirated V8.

My engine is not FSI. I know it still suffers from the fuel dillution but I don't think it gets the intake deposits that bad.