| Re: [GMCnet] Best oil to use? [message #214613] |
Tue, 16 July 2013 14:13  |
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hnielsen2
Messages: 1434
Registered: February 2004
Location: Alpine CA
Karma: 0
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Senior Member |
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Here is our story and we are sticking to it!
Coming down grade in to Grand Junction Co.
Susie was driving our 74 GMC
She noticed smoke pouring out the back.
Susie hung on and costed in to a truck stop.
I lifted the hatch oil ever where.
Not a drop in the engine.
I refilled the engine with ? oil and drive on to Henderson NV.
At our daughters home I changed out the ? oil back to Mobil 1
The engine is fine,the oil sample I sent in came back all +'s
We have only used Mobil 1 in this engine after it was rebuilt six years ago.
Mobil 1 is the only oil recommended by GM in the Corvette.
Howard
Alpine Ca
74 Canyon Lands
All is well with my Lord
On Jul 16, 2013, at 9:49 AM, David Orders <dao@oarsllc.com> wrote:
>
>
> Once again research only adds to the confusion. Manual says to use straight 30 wt and that 10W30-10W40 are "acceptable". Many on the interwebz recommend Mobil 1 15W50. I have no problem with paying for full synthetic if the motor likes it.
>
> So what do folks actually run? FWIW 1976 455 with 85K original miles, no smoke at all.
> --
> 1976 Royale "Twinkie II"
>
> "Aspergers syndrome, or something like that. A talent for seeing patterns and understanding abstract reasoning where other people perceive only white noise." - Mikael Blomkvist, The Girl with the Dragon Tattoo.
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