Castrol GTX 20W-50 | FerrariChat

Castrol GTX 20W-50

Discussion in 'Maserati' started by thecarnut, May 4, 2022.

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  1. thecarnut

    thecarnut F1 Rookie
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    Apr 22, 2006
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    The Car Nut
    #1 thecarnut, May 4, 2022
    I went to Walmart to get some oil and to my surprise saw that Castrol has introduced an oil for older cars. I guess they finally figured out that the only people that were buying their 20W-50 weight oil have an old car.

    Ivan

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    highwaybora, 71Satisfaction, Ferraripilot and 1 other person like this.
  2. italiancars

    italiancars F1 Rookie

    Apr 18, 2004
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    #2 italiancars, May 5, 2022
    Kind of like Coke Classic
     
  3. Ferraripilot

    Ferraripilot F1 World Champ
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    John!
    #3 Ferraripilot, May 6, 2022
    Yeah I noticed this recently too! I bought 3 jugs and dumped it in the 911. Well done Castrol
     
  4. MK1044

    MK1044 Two Time F1 World Champ

    Nov 6, 2011
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    #4 MK1044, May 7, 2022
    Is Zinc the same additive that Castrol GTX had back around the early 1970's? I recall you could stick a finger into the filler hole and feel the coating. I thought it was graphite back then?

    In any case, nice to see this.
     
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  5. Ferraripilot

    Ferraripilot F1 World Champ
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    #5 Ferraripilot, May 7, 2022
    No idea what it was back then as that's reaching back before I was around haha. These engines don't run incredibly high seat nor nose valve spring pressures anyway. The domestic stuff running 150-190lbs at the seat really needs the high zinc juice.
     
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  6. Oishi

    Oishi Rookie

    Nov 2, 2019
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    Ed
    #6 Oishi, May 10, 2022
    Good for breaking in camshafts.
     

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