Last post on Dec 09, 2013 at 6:48 AM
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Car Buying, Biodiesel, Diesel, Hybrid Cars, Coupe, Hatchback, SUV
#8112 of 11726 Re: . [fintail]
Feb 17, 2013 (8:45 pm)
Hey, now that is a cool post to see! Enjoy!
You've been hinting it (some form of diesel) was going to happen for awhile..way to do it in style. I've driven that motor in the GL recently. It will feel like a rocket in the much lighter E350.
#8113 of 11726 Re: . [fintail]
Feb 17, 2013 (9:03 pm)
I might be wrong on all accounts, but it will be more like 5,000 miles before the first mpg stabilization starts to happen. The first 500 miles are "critical" for both the diesel and NON diesel related items. While I have always followed a moderately to slightly more aggressive break in regiment, the fact is that longer term effects might be a non issue. This would especially be true if the plan is to surrender the car when the lease is up. An example might be 5 years, 12k max per year or 60,000 miles with mileage penalties over that.
Having said that, the first 500 miles (65 mpg and under) are important for the brake pads, rotors, suspension and other sub systems to break in slowly. The other side is to break in the engine with slightly to moderately aggressive rpm (75% of red line with occasional runs TO redline). One key being not going a steady rpm for too long (too long being 10 to 15 mins). Some other pieces of information might be too arcane for a leased vehicle.
#8114 of 11726 2014 Audi A8 L TDI
Feb 17, 2013 (9:07 pm)
Looks like Audi wants in on the diesel trend. Fin, is this what you rented in Germany? Only available as a diesel?
HERNDON, Virginia — The 2014 Audi A8 L TDI starts at $83,395, including an $895 destination charge, reflecting a $4,000 premium over the base 2013 Audi A8 L 3.0 TFSI.
The 2014 Audi A8 L TDI arrives in U.S. showrooms in the spring.
Available only in the long-wheelbase version, Audi estimates that the A8 L TDI will deliver 24 mpg in city driving and 36 mpg on the highway.
Engine options on the A8 L TDI are limited to a 3.0-liter turbodiesel V6 engine rated at 240 horsepower. It sprints from zero to 60 mph in 6.4 seconds.
#8115 of 11726 Re: . [ruking1]
Feb 17, 2013 (9:24 pm)
I'll go easy on it for the first month, for sure. Even though I might not have it more than a couple years, I want the car to be treated properly. After a few thousand miles, hopefully I'll get some remarkable mileage on road trips. Looking forward to summer.
#8116 of 11726 Re: 2014 Audi A8 L TDI [gagrice]
Feb 17, 2013 (9:28 pm)
I had a SWB A8 3.0 TDi for a rental, yes. I think I averaged around 33mpg in it, which included 120 mph+ driving. The 8 speed transmission is really something.
Feb 18, 2013 (5:54 am)
My gasser mpg "stabilized" around 4 to 5,000 miles but didn't really hit its stride until 10k. Then you read about other folks who get better than EPA mpg from the first tank.
I think those owners must follow the biker's theory and drive their new cars like Andretti from the get go. Seems like most manufacturers don't even talk about break in any more, and if they do, it's about the brakes, not the engine.
Fin, stomp that puppy - it's a lease after all.
Feb 18, 2013 (6:03 am)
When I bought my new Skoda Fabia vRS, (1.9 TDi Pd / 130bhp), the dealer's advice on running-in, (break-in), was simply........."Drive it like ya stole it".
So I did and it never used a drop of oil between services in the 4 years I owned it but the mpg improved noticeably from 10k miles onward.
Feb 18, 2013 (6:06 am)
Did the transmission dump after two years?
I suppose one could read the manual and trust what the experts who designed and engineered the car say.
Nah, that's no fun.
#8120 of 11726 Re: . [steve_]
Feb 18, 2013 (6:44 am)
I think from the diesels' side this is both the REAL GOOD news and approaches the arcane.
The upshot on the gassers are full break in normally happens in 500 to 1,000 miles. On a technical side, full compression occurs. This is SO normal and to the consumer opaque; as to be almost ignored to unknown to... ubiquitous.
The upshot on the diesels are full break in normally happens between 30,000 to 60,000 miles. So in Fintail's case, this is the "assumption" for an earlier point of view. The issue here and also in the gassers there are absolutely NO protocols to measure its progression or lack there of. I am not sure how to put it in context or scale, but it does fall into the category of TMI, in most to all cases. So for example in the 2003 VW Jetta TDI broken in specification for full compression is app 550 PSI. Obviously before break in it is less than that. To almost all gasser types and the majority of TDI drivers, who the H--- cares?
There are of course downstream consequences.
So for example I agree totally with Alltorque's take about not using a DROP of oil in a so called "correctly" broken in TDI. However the reality is more like 1/4 to 1/2 qt in a 30,000 miles OCI. Anyone who is knowledgeable about gasser OCIS knows that is literally NO consumption for the TDI.
Feb 18, 2013 (6:44 am)
The "first twenty hit" internet consensus is that 10,000k is the norm. Hm, kind of like my gasser experience. But my mpg keeps improving even at 182k, after fading a bit after getting new plugs at 124k (we're talking maybe a few tenths better mpg over the last 100k). My 21 combined mpg sweet spot did happen at 60k.
I don't know what "full break-in" is, but once you get beyond the owner's manual, it's all anecdotal. The way Seattle drivers are, Fin's more likely to have an inconsiderate texting Lexus driver total the front end than hit 300k.