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10-27-2023, 09:15 PM | #1 |
Senior Member
Join Date: Dec 2012
Location: Payette, ID
Posts: 936
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Oil after break-in
I have been looking at running Valvoline 822347 VR1 Racing Oil, 20W50 after break in. It is listed as conventional oil. I am used to oil listed as detergent and non detergent
Tim |
10-27-2023, 09:42 PM | #2 |
Senior Member
Join Date: Dec 2012
Location: Payette, ID
Posts: 936
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Re: Oil after break-in
So maybe conventional means it is not synthetic
Tim |
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10-27-2023, 11:57 PM | #3 |
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Join Date: Apr 2019
Location: Kansas
Posts: 922
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Re: Oil after break-in
That's correct. Also,I don't know what detergent level VR1 contains as racing designated oils sometimes differ in that regard. Terry
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10-28-2023, 03:18 AM | #4 |
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Join Date: Aug 2020
Posts: 145
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Re: Oil after break-in
VR1 is recommended because it has a high Zinc content which is beneficial for flat tappet engines. There are some on here that say we don't need it on our engines because of the low valve spring pressure. I am no expert. but I am running VR! 20W50 in a rebuilt Flathead. My oil pressure is 80psi even after 20 miles at 180deg. I think 80 is way to high! So I'm thinking 10W40 or 15W40 may be better. If you are running an oil filter (any style) I don't think detergent level will matter.
Last edited by 69a; 10-28-2023 at 05:13 AM. |
10-28-2023, 07:53 AM | #5 | |
Senior Member
Join Date: May 2010
Location: Granger (Northern) Indiana
Posts: 1,520
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Re: Oil after break-in
Quote:
VR-1 is available in 10W30, and is the best weight for most modified street engines. |
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10-29-2023, 11:34 AM | #6 |
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Join Date: Oct 2011
Location: Shelton, WA
Posts: 3,800
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Re: Oil after break-in
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I do have 1 flathead car out of 5 without an oil filter, A multiple Dearborn recipient, that gets regular oil changes. Every flathead I have was rebuilt, and clean to start with. If you have an old high mile engine already full of sludge, I would disassemble it and clean it out and put it back together if it had no issues. My 2 cents. |
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