Author Topic: Engine oil  (Read 609 times)

Offline 58Apache

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Engine oil
« on: February 28, 2020, 01:28:26 AM »
Hi Guys, I really want as much imput as I can get. I have just built a 572 Keith Black Aluminum Chevy. I built it pretty much to mirror Reher and Morrisons 583 20 degree motor. My heads are Brodix BB2 + which are different, but everything else is pretty much the same. Reher and Morrison suggest using a syntheic 10w-30 motor oil.  I have used Mobil 1 for years in my trucks and cars with great suscess, but I am very interested in what you guys have to say.

dreracecar

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Re: Engine oil
« Reply #1 on: February 28, 2020, 08:10:49 AM »
Everyone has their favorite for their own reasons, but there is no clear-cut winner,  all I can say is that if the engine was built with Synthetic oil in mind then that's what you use. Brands don't really matter. Do you plan a break in with regular oil?

Offline 58Apache

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Re: Engine oil
« Reply #2 on: February 28, 2020, 09:16:04 AM »
Yes, that is how I have broken in my other motors- Valvoline straight 30 weight for start up and break in. Then change to Mobil 1 10w -30

Offline gregm784

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Re: Engine oil
« Reply #3 on: February 28, 2020, 11:27:28 AM »
Oil threads can get 'heated' as everyone has a favorite.

I ran my bracket motors on Mobil 1 for years & years. Never had an issue.  I run my blown alcohol engine on Valvoline VR1.  Weight of oil is the call of the engine builder (not assembler). 

Greg
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Offline 58Apache

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Re: Engine oil
« Reply #4 on: February 28, 2020, 01:01:28 PM »
Greg, did you use regular Mobil 10W-30? My dad always used good old Valvoline 20W-50 conventional racing oil. It worked, but I noticed in my motors in which I used Mobil 1 that they looked like new on the inside when torn down. I am torn between Valvoline VR1 20W- 50 and Mobil one 10W-30. When I read that Reher and Morrison suggested using a synthetic 10W-30 race oil I was surprized. 

Offline gregm784

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Re: Engine oil
« Reply #5 on: February 28, 2020, 03:36:57 PM »
Valvoline VR1 tolerates alcohol better than Mobil 1 synthetic i think.

i used the synthetic in my bracket motors.  I'd set them up tighter on the bearings, and run a 5w20 oil.  changed it every winter.

My blown alcohol motor it way looser on the bearings.  I run 50w, and i change it once a year.
Greg
El Dorado County, CA
www.meansracing.com

dreracecar

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Re: Engine oil
« Reply #6 on: February 28, 2020, 05:33:53 PM »
My preference  on oil on blown Alc tends toward  PENN GRADE - formerly - Brad Penn - formerly - Kendal (old green formula) @ 50# change after 4 events just because

Offline 58Apache

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Re: Engine oil
« Reply #7 on: February 28, 2020, 08:14:42 PM »
Thanks guys.

Offline dusterdave173

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Re: Engine oil
« Reply #8 on: February 29, 2020, 05:53:29 AM »
All about how they do with alky
The Brad Penn does great with alky
Some oils hate it
I have always had a fascination with fast cars at the expense of more normal character development