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What kind of oil do you run in your third gen engines?

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Old 06-15-2012, 03:58 AM
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Re: What kind of oil do you run in your third gen engines?
Originally Posted by the209bnr
I went to the Dealer to have a oil change, lube and tire rotation done on my 1984 L69 Powered Trans AM, and noticed that it wasn't running as good as it was before I took it in.

Car only has 60k miles, what Weight and Oil would you recommend me using on it?

If you live in a cooler climate, use 5W-30. If you live in a warmer climate, use 10W-30.

I use Castrol GTX High Mileage, 5W-30. My 1991 Camaro has 120 K, and still runs like new, No leaks. The car's had 5W-30 running through it for 21 years.
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Old 06-15-2012, 05:31 AM
  #102  
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Re: What kind of oil do you run in your third gen engines?
Originally Posted by the209bnr
I went to the Dealer to have a oil change, lube and tire rotation done on my 1984 L69 Powered Trans AM, and noticed that it wasn't running as good as it was before I took it in.

Car only has 60k miles, what Weight and Oil would you recommend me using on it?
You just had the oil changed at the dealer, and it's not running as good now? I would take it back and tell them.
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Old 06-18-2012, 11:20 AM
  #103  
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Re: What kind of oil do you run in your third gen engines?
I've been using Valvoline MaxLife 10w-40. I have the typical leaky valve seals, although this oil doesn't cure that.

Thinking of trying out the new Quaker State Defy.
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Old 06-18-2012, 12:58 PM
  #104  
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Car: 1984 Trans Am L69
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Re: What kind of oil do you run in your third gen engines?
Rotella T 10w-30 it still has 1200ppm of zinc but I am thinking of adding some lucas zinc next change just for cheap insurance.
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Old 06-18-2012, 03:44 PM
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Re: What kind of oil do you run in your third gen engines?
I think I saw where Edelbrock is producing a high zinc oil for flat tappet motors.
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Old 06-18-2012, 05:45 PM
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Originally Posted by Stevolwevol
So then what about excessive cam wear with flat tappets do to low zddp? Is all of that a myth?
No, it's not a myth. That's why I offered two choices in synthetic base oils to maintain the ZDDP.
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