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Correct oil weight

Discussion in '1st Gen. Tacomas (1995-2004)' started by Toyota 4 ever, Apr 20, 2011.

  1. Apr 20, 2011 at 6:51 PM
    #1
    Toyota 4 ever

    Toyota 4 ever [OP] Member

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    Hello everyone, Glad to be on here! I have a 1998 sr5 tacoma 2RZ with 323,200 miles on it currently and still going strong. All I replaced was a cracked exhaust manifold. My question is what is the correct or recommended weight? I've been using pennzoil 15w-40 weight. Any advice? Thanks.
     
  2. Apr 20, 2011 at 7:02 PM
    #2
    chris4x4

    chris4x4 With sufficient thrust, pigs fly just fine. Moderator

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    10w-30
     
  3. Apr 21, 2011 at 5:10 PM
    #3
    mike sacc

    mike sacc Well-Known Member

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    15 40 is generaly used for deisel engines. the owners man. says 5 30 for my 2.7 but if thats what got u 300000 plus why change
     
  4. Apr 21, 2011 at 5:15 PM
    #4
    Max-4_Yota

    Max-4_Yota The Welfare Cadilac

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    I run 5-30 its what the manual says.
     
  5. Apr 22, 2011 at 11:36 AM
    #5
    Cvd2312

    Cvd2312 Well-Known Member

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  6. Apr 22, 2011 at 11:50 AM
    #6
    RAT PRODUCTS

    RAT PRODUCTS RAT Products

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    I am willing to bet if you go back to the OEM weight you will probably burn some oil. I have a 01 honda with 265,000 that used 5w-30 from the factory but now I run 10w-40 to keep it from burning about half a qt. every 5,000.
     
  7. Apr 22, 2011 at 12:16 PM
    #7
    JRockTaco

    JRockTaco Just some guy

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    I run 5w-30 Mobil 1 full synthetic, have been using it for about 2 years with no problems. Just don't overfill it, my truck seems to shift funky when you overfill the oil. I have a manual tranny, not sure if that makes any difference.
     
  8. Apr 22, 2011 at 12:18 PM
    #8
    JRockTaco

    JRockTaco Just some guy

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    the owners manual says to use 5w-30 but have been told that you can run a little heavier oil in older engines to keep it from wearing down too fast. But wouldn't switching to a full synth do that anyways?
     
  9. Apr 22, 2011 at 1:43 PM
    #9
    SpazzyB

    SpazzyB Master of the Prius...

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    5w30HM or just 10w30. switching to synth at that mileage might make it burn oil.
     
  10. Apr 22, 2011 at 6:44 PM
    #10
    TacoTaro

    TacoTaro Well-Known Member

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    5-30. Do an oil analysis to check the health of your engine.

    My buddies '04 3.4 burns no oil with 250k miles. He runs, and always has run, Mobil1 5-30 with drains in the 12-15k range. That truck runs as smooth as ever. No reason to change viscosity unless something is wrong. Again, do an oil analysis.
     
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