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  1. CTown Duramax

    2021 Yukon XL 3.0 Fuel Fill Assembly

    What's wrong with an ordinary fuel fill cap on a plastic retaining strap like every other passenger vehicle?
  2. CTown Duramax

    Diesel...10L80 L shift mode

    I had not noticed this unwanted feature, at least not until now. In MHO, I think my ten-speed auto tranny is always in the right gear for the conditions. I can shift a manual better than, say, a four or even six speed auto, but this ten seems to get it right for me every time. (Think of the...
  3. CTown Duramax

    DEF usage question

    I suspect that all these "issues" are non-issues. As I recall, the Euro cars use "Act Blue"/DEF/Urea too.
  4. CTown Duramax

    Oil Pump Belt Service Interval increased to 200K

    Ha ha. Worrying about a 150k service interval. Any of you old enough to remember cars becoming blowbot spewing rust heaps scrapped long before 100k miles?
  5. CTown Duramax

    LM2 Break In?

    One thing I noticed driving BMW B48, Benz 220D and Audi 40 TD four cylinder turbo diesels on German roads is that they are noticeably slower to accelerate at high speeds - say over 100 mph - BUT, those cars still made it to an indicated 235-240 kph, almost 150mph. At our speeds, 80 - 90 mph...
  6. CTown Duramax

    DEF usage question

    Mine has 9,500 miles and I have used four gallons.
  7. CTown Duramax

    Push Bumper

    I started this thread about eight months ago and wonder if anyone with a '21+ diesel Tahoe/Suburban has installed a push bumper. I'd really like one on mine. I contacted Setina and they could not give me any information about installing one of their bumpers on my '21 ?Tahoe LM2.
  8. CTown Duramax

    LM2 Break In?

    That sounds about right to me for fast driving over East Coast elevations.
  9. CTown Duramax

    Def Fluid pumps

    I am growing to appreciate the wisdom of this DEF system. I don't mind the smell of diesel but other people would, like my wife, kids and the neighbors. The DEF system almost completely eliminates the diesel smell. Together with the excellent sound damping, people don't notice this is a...
  10. CTown Duramax

    Oil Leak From New

    I hope this is the end of your problem. It's a great engine and there's an increase in power and efficiency you'll probably notice somewhere around 5k miles.
  11. CTown Duramax

    Denali Duramax: Expectation vs. Reality

    I have the '21 LT Duramax and drove the 327 ci gas model too before deciding. I really could not tell that the gas was any faster to 60mph or even 80mph but, off the line and for drivability, the diesel was the clear winner to me (just a biased and subjective observation and I love Chevy V-8's...
  12. CTown Duramax

    Oil Leak From New

    "Some of that is supposed to be on the undercarriage" What sort of like a 1950's Norton/Triumph/BSA, oil on the ground a good sign b/c it means there's still some left in the crankcase? I'll keep checking the oil cooler and keep an eye on the garage floor.
  13. CTown Duramax

    Diesel Cap

    +1. Seals what GM did not. No thanks.
  14. CTown Duramax

    Best Resonator & Cold Air kits?

    BMW & MB both offer 3.0L in-line six turbo diesels for some of their European sedans and SUV's. The BMW & MB engines have the identical output to the LM2 when statistics are converted to US units. The BMW & MB engines also come in higher trim levels with higher output, same displacement. I...
  15. CTown Duramax

    STELLAR Fuel Milage

    At 8,500 miles, I can consistently get 30-33 mpg going with a flow of 75-80mph. In town milage is great going to work with reasonable traffic flows in Boston area, 22+mpg. The engine performance is different from 327ci V8. I tried both. The diesel is less busy or less peaky and pulls a lot...
  16. CTown Duramax

    LM2 Break In?

    I noticed a 10% jump in mpg btw about 3,500-5,000 miles.
  17. CTown Duramax

    Oil Leak From New

    I am going to watch for this. Where did the oil show up on the garage floor, toward the front or back of the engine compartment, left or right side?
  18. CTown Duramax

    Service Emission System 3.0 Duramax

    High output, low fuel consumption, turbo driveability, clean running, all these demands must make for a complicated system. There is some trade off, but these engines are better than ever. The old stuff had problems too.
  19. CTown Duramax

    Diesel for city driving

    The business of letting turbos spin down before shutting off is past. From what I can see opening the hood after I shut this diesel off, it looks like the system pumps lubrication into the turbo. I think half the automobiles in Europe are turbo diesels like the LM2 in regular day-to-day use...
  20. CTown Duramax

    Diesel for city driving

    I would not worry about using the diesel in the city a lot. I would think your ten mile commute in the Atlanta area will probably get you 20+mpg. The LM2 has performed perfectly for me in very heavy city use. At 7,000 miles, 75% of engine hours have been in the city at rush hour, stop and go...
  21. CTown Duramax

    22” vs 20” wheels

  22. CTown Duramax

    22” vs 20” wheels

    We have high sharp granite curbstones to navigate on entering/leaving our driveway and 3d-world roads all over Eastern Mass, so I did not take the dealer's invitation to swap our 18" OEM wheels for 20's. Maybe I should have. I'm still on the fence about it. The 20" wheels have almost the same...
  23. CTown Duramax

    Considering Diesel

    So far, I have not had any problem finding DEF. We have used about six or seven gallons in 6,500 miles of 2/3 rush hour driving driving.
  24. CTown Duramax

    Installed an Auto Start/Stop Eliminator… works great, buy one!

    Has anyone had the car in for service after installing this switch set?
  25. CTown Duramax

    STELLAR Fuel Milage

    We have diesel and DEF at about 3/4 of the filling stations in my area.

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