Oil type on new/rebuilt engine

[94_C/1500]

Brad Penn is what I use now. I used to use Royal Purple but it's too expensive. If I can't use it, I'd use regular valvoline.

 

[AbramF_496]

I guess royal purple it is then 50$


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[AbramF_496]

Alright so my engine was rebuilt in December I put on about 4000 miles on it already. Then the cylinder head cracked. Put a used one that needs to be milled valve job etc. Do I use break in oil again? Straight 30 Royal purple Or can I use something like this royal purple break in oil. For all 5 quarts.

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[Supercharged111]

The only thing that breaks in is rings to cylinders and flat tappet cam to lifters, everything else just wears out.

 

[AbramF_496]

Alright coolio so just regular 10-30 RP should be good?


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[df2x4]

Do you mean they replaced the cracked head, or the entire block? If it's still that same block with the messed up starter holes then I certainly wouldn't waste money on royal purple. That engine will be back out of the truck before your next oil change.

 

[AbramF_496]

Why? I'm getting them tapped with two more new holes. N putting a race starter on it. Check it out

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[AbramF_496]

I'm replacing the cracked head only lol


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[DRAGGIN95]

Always good to get rid of a crack head!

 

[df2x4]

Why? I'm getting them tapped with two more new holes. N putting a race starter on it. Check it out

Don't get me wrong, I hope it works for you, but judging by the looks of the cracks in that pic you posted I wouldn't hold my breath. They're just going to expand eventually and you'll be back in the same situation.