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  1. I

    oil change monitor

    I have a 07 gmc sierra classic with a 4.8l V8. I changed the oil 7000 miles ago with 5/30 pennzoil Platinum? Should I change the oil or wait for the oil change monitor to come on? I getting a little nervous. Thanks.
  2. I

    changing rear end fluid on 2007 gmc

    Hey all just wanna ask if you think it would be benneficial to change out the rear end fluid on my 07 gmc sierra classic? I know it already has synthetic from the factory but if theres better oil out there I'd like to change it. thanks.
  3. I

    was at AAP today

    Yup im a sparky. lol
  4. I

    was at AAP today

    I go by wideglidedan.
  5. I

    was at AAP today

    KBFXDLI is that you from hdforums?
  6. I

    was at AAP today

    These part store guys need to learn more about what theyre selling. I went in AAP last week to buy some PP and a filter and wanted a pure one filter. Well they didnt have one for mine so I got the regular purolator, and the parts guy says "you dont need the pure one anyway, it has teflon or...
  7. I

    redline water wetter?

    Id like something to help cool my sonoma 2.2l off, seems like those little motors run hot.
  8. I

    Synthetic ATF?

    thanks guys I have the 5yr/100000 warranty on this truck but I intended to keep it along time. When do you recommend the first pan change?
  9. I

    oil for yamaha yfz450 atv?

    what oils do you recommend for my yfz450 atv?
  10. I

    redline water wetter?

    has anyone used this stuff?
  11. I

    Synthetic ATF?

    just bought an 07 sierra classic, How do you drain all the fluid out of the torque converter?
  12. I

    Are lower HT/HS oils the future?

    My 91 c1500 had a 350 and I believe it used a flat tappet.
  13. I

    Oil for gm 4.8L

    thanks. the OLM, how does it work? Is it mileage or does it actually monitor the oil. thanks again.
  14. I

    Oil for gm 4.8L

    I just bought a 07 gmc siera with a 4.8L. What oil would be good for this engine. Thanks.
  15. I

    Blend question: Rotella 10W30 CJ4 + Redline?

    Where can you buy rotella 10W-30? Does HDEO stand for Heavy Duty Engine Oil?
  16. I

    Moly in Castrol GTX?

    Hello all. I have a 2002 GMC Sonoma with a 2.2 4 cylinder. I'm curious Ive been running castrol gtx 5-30 and does this oil have alot of moly in it? I take it has a pretty robust additive package? Ive been running it for 3k-5k oci's. Is 5k about the limit for oci's with this oil. I currently have...
  17. I

    GM 6.0L oil use

    My cousin has one of these engines in a '01 3/4 truck. He kept the oil changed every 4-5 thousand miles and it sludged on him so bad it blocked the oil pump screen. It has maybe 120000 miles and used quaker state oil.
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