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1-19 of 19 Results
  1. Maintenance
    I have a 2023 Duramax 2500 HD. I notice that the dipstick does not read at the top of the hash mark after oil change. When I mentioned this to the service manager, he stated that they put in the correct volume and if they add oil to bring it to the top of the hash mark, there would be about 1/2...
  2. 911 Problems Forum
    I just replaced some Injectors which helped get my blowback fixed on my truck by a shop and then had to do some other front end stuff so it sat in super cold temps . I put a bunch of lifeline and supp In after thought it was a fuel filter so I replaced that and water separator but now it stays...
  3. 04.5-05 LLY Duramax Powertrain
    I inherited a really good condition LLY Chevy 2500 from my uncle recently. He always kept up with standard maintenance and put 430.000 miles on the truck (mostly highway) with traditional oil. I'm wanting to switch to full synthetic oil full time but am a little worried that the truck won't...
  4. Alternative Fuels Diesel Additives Lubricants
    After Valvoline oil change location destroyed a truck of mine for a second time, and my local diesel mechanic wants ~$450 to do an oil change and fuel filter change, I've decided to only work on my truck myself going forward... I have decided that I want to go with Amsoil 15W-40 for spring to...
    oil
  5. 911 Problems Forum
    Hello all, 2020 L5P with 24k miles and not other major issues with vehicle since new. Has anyone noticed the oil "seemingly" going up a little between changes? Looks to be 1/4" to 3/8" above full onto the wire portion. Oil pressure is good. Color is good. No strong diesel fuel smell. No...
  6. 11-16 LML Duramax Powertrain
    Been playing fomd the oil leak with my 2015 this week, 184k miles, dually. Pics are from the front side of engine, under the truck looking up at whatever that is. The entire upper oil pan and a lot of things in that general area were caked with oil, truck was 1qt low. Cleaned it all up and let...
  7. General Discussions
    another duramax issue my oil pressure is high and the cap is blowing off it shot oil all over the engine bay what should i do?
  8. Kodiak & Topkick Forum
    I have a 1993 Topkick, it runs OK, but a little rough and gutless (probably OEM gutless, that may be a “feature” and not a real problem) It needs a “Tune up” and I do not know what I need. What would you use for the following? Sparkplugs – What are the OEM plugs? Oil – At idle I am getting a...
  9. General Discussions
    So my oil pressure gauge in my truck doesn't work, oil is fine it is full, so we think it needs a new sensor. I seem to be getting conflicting google searches as to where that sensor would be located. Any one can tell me, or send a good YouTube link (or even just a photo) of where it is and how...
  10. 04.5-05 LLY Duramax Powertrain
    Guys I can’t seem to figure out why my LLY is burning so much oil in the cold (-30C). Truck has 213xxxKM. 0-40 synthetic. But only does this in the cold! Would it be a plugged PVC re route hose? I unplugged it and am trying it now. In need of help please.
  11. 2020+ LM2 Duramax Powertrain
    So I have been lurking the boards, and seeing what owners are experencing with the engines and if this would be a good truck to go with. The 0W-20 seemed completely assanine, especially when it is only 3 approved oils- when you can find them. I follow this blog- and I asked the guy about...
  12. Parts For Sale
    4 brand New Oil filters Cat 1r-1807 Plus adapter to Make them Fit On a Duramax. Had the adapter on my lb7 for about 4,000 miles. $75 Let me know were i have to ship to to calculate shipping.
  13. General Discussions
    So I just replaced all 8 injectors all with new cups new high pressure lines new return line bolts. I cleaned the return lines really well. Still feel like I have some fuel in my oil and it’s smoking white after I accelerate. It’s black smoke and then white. I really need help here. Any help is...
  14. New Member Introductions
    Hello everyone, new to the forum here and I am new to owning a Duramax! I recently inherited a 2003 chevy Silverado 2500hd Duramax lb7, my grandfather bought it brand new in 2003-04 and he pasted away 2 years ago today actually. I inherited the truck a year after his passing and I am wanting to...
  15. 01-04.5 LB7 Duramax Powertrain
    Woke up this morning and realized I have oil covering the undercarriage and tailgate. Checked all plugs and filters and fluid levels. Oil is way low. Started checking around the motor and found no leaks. When I got under the truck to look around I found a broken part. I have no idea what it is...
  16. 04.5-05 LLY Duramax Powertrain
    well i got my new injectors in today. cool. I went to vacuum out my cylinders and much to my surprise im vacuuming out oil... and that isn't cool because i didn't notice anygo in when i was pulling out my old injectors. can oil get in there when u have a bad injector or something?:help
  17. 01-04.5 LB7 Duramax Powertrain
    Hi guys, new to the forum and to diesels. I have read a lot of the threads about LB7 injector issues, but they still leave me with a question. People mention fuel in the oil from bad injectors, but no one seems to have had any bearing failure or other related problems. Have there been? How...
  18. Maintenance
    hey guys just thought i'd let you know O'Reilly's is running a sale on Mobil Delvac 1300 for 9.99 a gallon as opposed to normally 14.99. only when you buy a case of 4. Went and picked up a case yesterday and a Mobil M1-303 filter. gotta love oil changes for with quality oil and primo filter...
  19. New Member Introductions
    Hello there. Just bought an 06 Chevy silverado 2500hd with a 10" lift and 39 1/2" tires. It has the 6.6l diesel engine with allison transmission. I love it so far except that I have a concern about oil leakage. I thought it was loose bolts but after tightening all the bolts I could find in...
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