What oil are you using?

Discussion in 'General Ranchero Help' started by beerbelly, Sep 9, 2020.

  1. beerbelly

    beerbelly In Maximum Overdrive SILVER MEMBER

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    I've been using Valvoline VR1 10W-30 for several years, and it seems to be a fine oil, high in zinc for my old flat tappet 289. It's getting spendy, even at Amazon, so I've been kicking around the idea of trying a semi or full synthetic, like Mobil 1 10W40 High Mileage, which claims to have high levels of zinc also. Better price, but I've heard the stories about leaks after switching from conventional to synthetic too.

    I'd like to hear what others are using, especially if you've switched from dino to synth, and how that worked out.
     
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  2. pmrphil

    pmrphil In Maximum Overdrive GOLD MEMBER

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    Same as you, VR1 - I use Mobil1 in all the newer cars here, but not in the older pieces. If there's a place to leak, synthetic will find it. The lack of a PCV valve is almost a guarantee of a leak with synthetic. The Valvoline is cheap insurance.
     
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  3. handy_andy_cv64

    handy_andy_cv64 In Maximum Overdrive SILVER MEMBER

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    I have a cousin who, by trade, is a petrochem engineer (but is now a professor at Washington State U.), and in discussions with him, the syn oil leakage in older cars has pretty much been alleviated when a seal actually doesn't leak on dino oil. It's generally only where a seal/seal surface is so worn, that it will leak dino oil that it really leaks out synthetic. I'll be testing that when I do Babe's next oil change, as I'll be going back to full syn oil. My cousins recommends Castrol's and Valvoline's formulas.
     
    Last edited: Sep 10, 2020
  4. pmrphil

    pmrphil In Maximum Overdrive GOLD MEMBER

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    Hey Andy -
    I don't know what "sun oil leakage" is, but I can tell you that older seals were made of different materials that do not respond well to synthetics, resulting in leaks.
     
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  5. TestDummy

    TestDummy In Maximum Overdrive SILVER MEMBER

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    My last oil change I used Valvoline VR1 Racing Synthetic SAE 10W-30. It was $40 for a case of 6 last year, and is now like $65. Big deal. I'm not changing it every 6 months. More like every 16 months. I last changed it last summer after replacing the intake gasket, and have put maybe 500 miles on it since. It's still gold and clear, so it's staying in there.
     
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  6. handy_andy_cv64

    handy_andy_cv64 In Maximum Overdrive SILVER MEMBER

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    Phil, my God damned phone loves to change word spellings on a whim. I have corrected the error (it did it on two other times I've used the abbreviated word 'syn'). Anyway, according to him, it wasn't the seal material that caused the leaks, it was not putting in an additive that helped the oil stay behind the seal. Once the chemists figured that out, and added it in, that problem pretty much went away on those engines that weren't worn to a fair-thee-well.
     
  7. pmrphil

    pmrphil In Maximum Overdrive GOLD MEMBER

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    It's way more fun reading it the other way :p;)
     
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  8. plumcolr

    plumcolr In Maximum Overdrive SILVER MEMBER

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    Ran Mobil1 in my 289 (66k original miles) with no problems or consumption. Had a 78 fiesta that would go thru a quart between changes (at 4 k), after trying mobil1 it was about 900 mi/qt. No signs of a leak, seemed to work its way past rings / valve seals.
     
  9. super green dog

    super green dog In Third Gear

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    Hey guys, I did previously use Valvoline Max Life. While I know its the original 390 - have no history after 6 years & not sure how much work &/or whats been done prior to my ownership. A couple of months ago i put in Lucas Hot Rod & Classic that some car friends suggested, (has high zinc). My 69 seemed to run smoother/quieter... but, that might just be me trying to justify the extra $'s it cost. And agree w TD - with putting on low mileage, (maybe 200 miles/mo.) - the oil gets changed every 12-18 months.
     
  10. Rockin Ranch Arrow

    Rockin Ranch Arrow In First Gear

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    To all,

    I am using Joe Gibbs 10-30 wt oil. Just put in the five quarts and new filter on the 6t4 Rockin Ranch Arrow. Price for me as 7.99 a quart at the parts store.

    Supposed to have a good zinc content ?

    RRA
     
  11. wdfp

    wdfp In First Gear

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    I used to run rotella t 15/40 for a long time then when they changed the mix I went to mobil 1 10/30 and I'm happy with it
     
  12. SouthCarolinaRanchero

    SouthCarolinaRanchero In Second Gear

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    Had a engine builder tell me to use ROTELLA because it has ZINC in it. He said older motors need the zinc to prevent wear.
     
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  13. beerbelly

    beerbelly In Maximum Overdrive SILVER MEMBER

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  14. wdfp

    wdfp In First Gear

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    Rotella T did have more zinc in it but they cut it in half or so, I think it was around 1100 ppm and then down to 600 or so and it was tough to get it in full gallons for a while. Buy it in gallons and it would have 3 to 31/2 quarts in it if you were lucky so I changed and went with what I did based on the pressure tests a guy did and Mobil one was about twice what Rotella was..
     
  15. super green dog

    super green dog In Third Gear

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    Beerbelly - good article - Very helpful. Its clear the author has received significant 'push back' from folks w their own views/perspective... Which i get, but its hard to dispute scientific data (assuming it was accurately & fairly generated, as well as repeatable )... Will do some price/availability/performance shopping prior to next oil change. Living in So Cal - its gets pretty hot & never close to freezing so typically go w 10w40. Hwy, I know there's nasty fires in Oregon - stay safe. In So Cal - the skies have been yellow/orange during the day due to so much ash in the air...
     
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  16. Clark

    Clark In Maximum Overdrive

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    I ran Valvoline 10W-40 in my '75 460 for years - 265,000 miles. The engine rebuilder said it was very clean inside when dismantled.

    I do wish Ford offered a Motorcraft synthetic blend in a 10W-40.
     
    Last edited: Sep 17, 2020
  17. Buddy Porter

    Buddy Porter In Third Gear

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    Thanks for the information BB, I hope you & the other members are safe out there from those fires!!!!
     
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  18. beerbelly

    beerbelly In Maximum Overdrive SILVER MEMBER

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    Saw the sun today for the first time in over a week:

    20200915_112322.jpg
     
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  19. super green dog

    super green dog In Third Gear

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    ah - good to know!
     

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