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Time for Front/Rear Diff Oil Change... Talk me out of Royal Purple

Discussion in '2nd Gen. Tacomas' started by 68Whiskey, Mar 1, 2013.

  1. 68Whiskey

    68Whiskey [OP] Well-Known Member

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    Richie
    Ft.Bragg NC
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    2008 4x4 DC TRD Off Road
    I just broke 60K the other day on my Taco , looking to do the Motor and F/R diffs . Motor Oil is going to be Royal Purple for sure since its already been bought , but I cant find any solid reviews on why RP is "bad". I used to always run RP in my Nissan SR20 motors and it worked great.

    So between RP 75-90 and Mobil 1 75-90 gear oils , Which and why? Its between these two primarily because they are in stock at the local Autozone or Walmart.
     
  2. fla taco

    fla taco Well-Known Member

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    I recently did the 30k fluid change in my 05. I almost went with RP but decided on Mobil 1 for a couple reasons. First being price, Mobil 1 was about half the price of RP and came highly recommended, Second I could find no real diff in the two and in speaking to the maniager he said the real key is changing fluids at proper intervals.
     
  3. Murph

    Murph ski-doo ride the best screw the rest!

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    3" lift. American racing 15'' rims. 33x12.50 BFG A/T tires. tool box. ARB bumper, mile marker winch, kc highlights. No carpet inside sprayed with bed liner. Kicker door speakers. Alpine head unit.
    I've always used mobile 1 mainly due to cost. I have 186K on the odometer and I have had nothing but success with mobile 1. Your just paying for a name with royal purple :cool:.
     
  4. 05Aztacoma

    05Aztacoma Well-Known Member

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    Tempe, Az
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    Almost Stock
    I have looked into RP in the past and always end up going with Mobil 1. M1 seems to be easier to find and about half the cost of RP.
     
  5. 92dlxman

    92dlxman drinking whats on sale

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    Kevin
    Visalia, CA
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    5100s, ome884s, wheelers aal kit, and some rustoleum
    i ran royal purple in my chevy and was the only motor oil that would allow a good chirp on the 1-2 shift. i also sold my chevy blowing smoke.

    cant say that the oil was responsible as i ran a few others but the cost alone makes it completely unjustifiable anymore.

    they do have some pretty convincing test material on video though
     
  6. Sublime

    Sublime Well-Known Member

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    Phoenix, AZ
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    Icon/All Pro.....chopped for 35's
    Price......just get MB1 like the rest of us!
     
  7. kevinthefawker

    kevinthefawker Well-Known Member

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    2012 mgm dcsb trd off road 4x4
    always changing
    i just did my front/ trans case/ rear diff today using amsoil fluid. i only had 20k on the factory fill fluid and boy was it dirty already. [​IMG]
     
  8. Hot2na

    Hot2na Well-Known Member

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    I second the amsoil....
     
  9. mjm540ii

    mjm540ii Ding Dang Dee

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    Oxford, PA
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    Fog light mod, interior LED's, illuminated switch, B110 5100's in the rear, Satoshi Grill, Hella 500's, 4X Innovations sliders, rear diff breather mod, painted rocker panels, bhlm, yellow wire mod, CB, Wheeler's 2"aal, Allpro diff skid, ubolt flip, LR UCA's, 885X's w/ 13mm spacer on 5100's, Spydertrax spacers, Relentless IFS/ mid/ T case skids, 255/85/16 KM2s, block heater, DTRL mod, T2 eyelids, Wheelers Superbumps, Extended SS brake lines, ATO shackle flip kit,1" 4Crawler BL, Elite fr plate bumper, Flyzeye LEDs, Drilled and slotted rotors, 20" LED bar
    Just remember to get "LS" or "limited slip" approved/formulated!
     
  10. hetkind

    hetkind Well-Known Member

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    Howard
    Johnson City
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    bilstein set at 1.75, Racho 5000 rear with 4 leaf kit, floor mats, high lift jack, pull hook in hitch, bed rail corner braces, severe duty brake pads and devil horns on the grill....
    I might be a contrarian, but I buy the Valvoline 80w-90 GL-5 gear lube at NAPA for $72 for a five gallon bucket...I haven't failed a differential, transmission or transfer case in 30 years...with TWO exceptions. My 87 BMW R80RT needed a output shaft bearing due to a missing factory c-clip, at 18 years and 125k miles and the 94 Toyota pickup started popping out of gear at 217k probably due to a shifter issue. But as for gears and bearings, no problems to date.

    Don't be sucked in by snake oil.

    Howard
     
  11. Eldo

    Eldo Well-Known Member

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    Calgary
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    a few
    /\/\/\ this. /\/\/\
    regular service is more effective than "designer" lubricants.
    if some research is done, it's funny to see that most of those designer lubricants are just relabelled / or dyed versions of their "lesser" competition.

    with that being said, i've always run RedLine gear oils with great success. (many many track days in various cars, and now towing & getting out on trails in my tacoma)

    [​IMG]
     
  12. PSJ

    PSJ Prerunners Work

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    Rear Leaf spring TSB, Bilstein 5100's all around w/ front set at 1.75", 265/75R/16 Mickey Thompson Baja STZ's, Trailer hitch w/custom wiring, AFE drop in dry filter, Rear Diff breather mod, Debadged truck, customized stock TRD wheel center caps, added factory fog lights, bed mat, door sills, tinted windows
    I went with Amsoil with the Manual tranny (75-90W API GL-4) and Rear Diff(75-90W Severe Gear) at 30,000. Tranny oil looked used, about ready for a change for the anal guy. Rear Diff oil looked new, in no way in need of immediate change, but I just wanted to go full synthetic with all fluids.
     
  13. Curt7088

    Curt7088 Well-Known Member

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    Curtis
    Jacksonville
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    Cobra 40 w/ a 4ft firestick, armortech offroad sliders. Awaiting install
    I used rp in my 02 wrangler rp everything lol and i beat that thing hard, very hard. I had a locker in the rear d35 and even with the stress and strain of that and rock crawling/ chirping the tires on pavement constantly (it was a lunchbox autolocker) and i never had a failure and when i first switched to rp i had a knock in the valves and it quieted down after the switch. With that said on my tacoma i use castroil titanium edge 0 20 on the engine and honestly there really isn't a difference... i feel if you use synthetic and maintain the intervals then the vehicle is going to do fine...
     
  14. 68Whiskey

    68Whiskey [OP] Well-Known Member

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    Ft.Bragg NC
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    i ended up putting RP in the motor and Mobil 1 synthetic in the the F/R DIff and T-Case

    The truck runs a lot smoother now , its amazing.
     
  15. TacosNBurritos

    TacosNBurritos Active Member

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    I'm planning my 30k Maintenance on my 2012 Taco 4x4 and I wen toy he dealer ship to buy the oil they use. Well, the guy brings out 75w-140 oil. I told him that was the wrong oil. He said this is what we use and I told him I want a Toyota service letter substituting the 75w-85 for 75w-140. Have any of you ran into this? Is there something we don't know that we should?
     
  16. FARNORCAL

    FARNORCAL Well-Known Member

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    EVERYWHERE
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    06 Tacoma4x4 DC LB Silver TRD Sport
    SEE SIGNATURE
    Go with this changed my front and rear diff and transfer case with this dont forget the LSD Additive you'll need this for the Rear.
     
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