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Old 04-11-2023, 01:57 PM   #1
pdxhall
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oil & trans fluid

I'm getting ready to do the first fluid changes on Sanity. I've got break-in oil in the engine and I am going to change the trans fluid in order to do a little work on it and remove the temporary filter. I know what my go to fluids are but I am curious to see what other members use. I've got a 350 with a 700r4 trans. I am also in AZ now rather than OR so what weight oil should I run for the high temps down here in Tucson
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Old 04-11-2023, 04:06 PM   #2
jayoldschool
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Re: oil & trans fluid

The oil weight depends on how the engine was built. What's the spec? Crate motor?
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Old 04-11-2023, 04:12 PM   #3
jchav62
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Re: oil & trans fluid

I always run an oil high in zinc. Some guys use Rotella or Delo. I have been running Lucas Hot Rod 10w30 in my 327 for some time. Castrol also makes an oil high in zinc called "Classic". Better for old style flat tappet engines.
As for the trans, Dexron III.

Take care,
JC62
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Old 04-11-2023, 09:44 PM   #4
jayoldschool
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Re: oil & trans fluid

We don't know if he has a flat tappet or a roller cam...
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Old 04-12-2023, 08:56 AM   #5
jchav62
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Re: oil & trans fluid

Maybe we'll find out...
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Joseph Chavez
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......................_____
.........________//__{\_____
,,,,,,,/__(O)___//___/__(O)_/

1962 C10 Shortbed Fleetside 327/th350 GV overdrive
1974 C10 Longbed Fleetside 350/th350 "The Trash Truck"
1999 Chevy 2500 OBS, Longbed 5.7/4L80E 4x4
2015 GMC Sierra SLE 1500 4x4
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Old 04-17-2023, 01:29 PM   #6
pdxhall
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Re: oil & trans fluid

I really don't need a recommendation on what to use in my particular engine but I was just curious as to which brand oil and trans fluid are your go-to brands. I know my favorites. what are yours?
Right now I'm running Castrol high zinc break-in oil
For those who missed my point. here you go.
New GM 350HO long block with LT1 heads (flat tappet)
Edelbrock Performer manifold and 650 carb
Speedway Ram Horn exhaust manifolds
700R4 heavy duty built with a Transgo kit
And I should mention that I'm in Tucson AZ with temps up to 115 in the summer and a few days in the winter where it dips below 32.
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Long bed, Fleetside, Small back window

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Last edited by pdxhall; 04-17-2023 at 01:34 PM. Reason: more info
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Old 04-18-2023, 08:02 PM   #7
marmst64
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Re: oil & trans fluid

I live in Arizona 327 motor i use Brad Penn Partial Synthetic Blend High Performance oil. In the summer i use 10W40 in late fall winter i use 10W30. It's a good oil made for flat tappet cam high zinc
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Old 04-18-2023, 08:47 PM   #8
pdxhall
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Re: oil & trans fluid

Quote:
Originally Posted by marmst64 View Post
I live in Arizona 327 motor i use Brad Penn Partial Synthetic Blend High Performance oil. In the summer i use 10W40 in late fall winter i use 10W30. It's a good oil made for flat tappet cam high zinc
Thanks for the reply. It's great to hear from a Tucson member. That's great info. Do you mind me asking what part of Tucson you're in?
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Long bed, Fleetside, Small back window

I've Done So Much, With So Little, For So Long, That Now I Can Do Anything With Nothing.
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