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Old 06-24-2019, 02:58 PM
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I thought Griff said NO MORE OIL threads..........

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Old 06-24-2019, 03:42 PM
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Originally Posted by F-2 Speedy
I thought Griff said NO MORE OIL threads..........
I thought it was the guy from Iran ?
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Old 06-24-2019, 03:49 PM
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Originally Posted by SB
I thought it was the guy from Iran ?
They maybe toast soon, glad the Pres didnt reach for the button
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Old 06-24-2019, 04:28 PM
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Was running Castrol 20W50 until a fellow OSO guy recommended Brad Penn straight 50 (never start motor if I need a jacket). It is different, the 20W50 shows more psi then the straight 50 at idle and higher rpm.
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Old 06-25-2019, 09:00 AM
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Originally Posted by DiamondPerformance
Amsoil Racing 15w-50 is also a good choice.
You need to read the report from Mercury after they did a tear down on Teagues motors after a season of racing. No measurable wear after a full racing season running Amsoil.
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Old 06-25-2019, 09:23 AM
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Conventional Valvoline VR1 20W50.

Used it for years.
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Old 06-25-2019, 10:09 AM
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I switched to Mobil 1 15-50 & Mobil 1 Filters & I dont have the fluctuations with pressures & temps like I had with others...
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Old 06-25-2019, 06:00 PM
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Last edited by MILD THUNDER; 06-25-2019 at 06:03 PM.
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Old 06-25-2019, 06:12 PM
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Alot of guys assume they need this or that based on bearing clearance. Oh, its a big block, well than it must need a straight 50. IMO, it has more to do with the temperatures youre operating in. I dont think ANYONE needs an engine oil that has 220 centistokes at 100* of oil temp. Of course theres the argument for viscosity modifiers shearing, and breaking down, etc.

Lets say you run 210* of oil temp running hard. Maybe the 15w50,20w50, 25w50 might be fine. Lets say your buddy only runs 150* oil temp in his engine. that 50 grade might be too viscous of an oil for him. a 40wt might be better. Then theres the guy who maybe runs 250* oil temp. He may want to run a 60wt.

Interestingly, the Amsoil straight 60 synthetic, is actually thinner cold, than a straight 50wt , and not much thicker than a 20w50 VR1. So one might say, that guy running straight 60 is a moron, and he's pumping syrup thru his engine, but that would be a bar room assumption.
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Old 06-26-2019, 09:21 AM
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Originally Posted by MILD THUNDER
Could you explain this table
Thanks
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