Engine oil

[Alan O'Connell]

What oil would you use in a rebuilt 36 V-8 engine?

 

[TJ]

I had a '38 motor rebuilt some years back and I used 30wt Castrol. Worked just fine.

 

[Kurt in NJ]

What ambient temperature range?
What does the person that rebuilt it require to keep warranty in effect?

 

[Drbrown]

More important for post rebuild, chage the oil after about 1000 miles.

 

[tubman]

It may go without saying, but use detergent oil, especially in a fresh rebuild. There are a few out there that say to use non-detergent oil in a flathead, as it is an "old style" engine, but that is bad advice. Nothing could be worse advice as it will produce sludge that will build up in the engine. Detergent oil is formulated to hold the contaminants in suspension so they will be caught in the oil filter or be removed from the engine when the oil is changed during regular oil changes.

 

[Kube]

It may go without saying, but use detergent oil, especially in a fresh rebuild. There are a few out there that say to use non-detergent oil in a flathead, as it is an "old style" engine, but that is bad advice. Nothing could be worse advice as it will produce sludge that will build up in the engine. Detergent oil is formulated to hold the contaminants in suspension so they will be caught in the oil filter or be removed from the engine when the oil is changed during regular oil changes.

Yes sir! Spot on as usual.

 

[TJ]

I should correct my post on the oil. I did use 30wt Castrol detergent. I changed it after the first 500 miles after the rebuild.