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  1. C

    Truck likes Havoline

    2002 Chevy 6.0 seemes to have least audible piston slap with Havoline 5w30.
  2. C

    Havoline from Warren Distribution?

    Noticed Warren Distribution, Council Bluff IA. sticker on case of Havoline 5w30.
  3. C

    Changing brand. OK to mix?

    Grease is for 2002 Chevy Silverado 2500 HD chassis.
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    Changing brand. OK to mix?

    Is it OK to mix Mobil-1 grease and Schaeffer 274?
  5. C

    0W30 M1 - can't find it ANYWHERE - does it even exist?

    I saw M-1 0W30 for sale in Bangor Maine. The bottle was yellowish silver.
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    What's in your engines at the moment?

    2002 Chev. Silverado 2500HD 6.0 -Havoline 5w30
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    50%Valvoline Syn, 50% Shell Conventional .. OK?

    How does a 50/50 mix of 5w30 Havoline Dino. and GC 0w30 sound for a winter mix in a GM 6.0 engine? Min temp -20.
  8. C

    Chevy 2500HD trans. fluid?

    Since I plan to keep the truck for at least ten years, I think I will give Amsoil a try. I appreciate the replies
  9. C

    Chevy 2500HD trans. fluid?

    Truck has the 4l80e transmission. Yes I do tow a 7500lb camper.
  10. C

    Chevy 2500HD trans. fluid?

    30000 mi.on truck. Should I go with synthetic?
  11. C

    GM Piston Slap

    Castrol syntec did help quiet the piston slap, but it is still there. I think Terry was right. In most cases no oil is going to eliminate the noise, but it can make a big difference in how loud it is.
  12. C

    GM Piston Slap

    eddyzima- Glad to here that you found a combo that works! Thanks for the info. I will try 3qts of syntech 5w30,and 3 qts of 10w30 for the winter,and then go with straight 10w30 for the summer.
  13. C

    GM Piston Slap

    So far I have tried GC 0w30, and 5qts of Mobil-1 10w30 with 1 qt of Redline 5w30. With the GC the knocking was louder and knocked even when engine was warm. Had oil analysis done with both. Mobil-1 was slightly better. I am thinking about trying Castrol Start-Up 5w30 next. Your suggestions are...
  14. C

    GM Piston Slap

    Thanks for the advise. I will learn to live with it.
  15. C

    GM Piston Slap

    Has anyone found an oil that helps to eliminate the infamous GM piston slap?
  16. C

    Mobil-1 10w30

    Temp. gets down to about -10 F here in winter. Should I leave the Mobil-1 10w30 in my Chevy 6.0 or switch to a 5w30,0w30, or 0w40?
  17. C

    Mobil-1 + RedLine 3900miles 5W-30

    I am currently running 5Quarts of Mobil-1 10w30 and1 quart of REdline 5w30 in my Chevy 6.0. Should I run it through the winter,or switch to5w30, 0w30, or 0w40? btw. I live in New England.
  18. C

    What is your OCI and brand of oil being used?

    02 Chevy Silverado- GC 0w30 with K&N Filter- Change every 5000 mi. 04 Chevy Trailblazer- Havoline 5w30 with AC Delco filter. Change every 6mo. or 3000 mi.
  19. C

    GC 0w30, 4024 miles, 2002 GM 6.0

    Still using original air filter. Oil -German Castrol 0w/30
  20. C

    GC 0w30, 4024 miles, 2002 GM 6.0

    I tow a 8000 lb camper,and a snowmobile trailer quite often. Daily commute 5 mi.Recent temps -10 to 30 F.
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