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64 BJ8 rebuild.

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Susan Lybolt

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I just built Susies 64 BJ8. She bought in in 1968. Her first car, that why her plate says KEEPRR. What is the oil for the break in Engine,trany 0204141742.jpgand overdrive?
 
Susan Lybolt said:
I just built Susies 64 BJ8. She bought in in 1968. Her first car, that why her plate says KEEPRR. What is the oil for the break in Engine,trany View attachment 32304a

nd overdrive?[/QUOTE

SUSAN
Flat-tappet Engines should be lubricated during break-in with oils having a high concentration of zinc, { ZDDP } One lubricant providing sufficient zinc is Lucas Oil Break-in Additive, wich is added to a good hi quality racing oil such as Valvoline VRI or oil similar to the castrol 20/50 oil

Do not use synthetic oils before completing the break in.

Transmission can use a 30 t0 40 weight racing oil

There are other options that will fit this criteria and others listers will chime in--Keoke
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Joe Gibbs Break-in Oil for the engine. You'll get varying opinions about how long before switching to regular oil. I ran mine about an hour before dumping it.

30W nondetergent oil for the tranny and overdrive.
 
Keith_M said:
Joe Gibbs Break-in Oil for the engine. You'll get varying opinions about how long before switching to regular oil. I ran mine about an hour before dumping it.

30W nondetergent oil for the tranny and overdrive.
Click to expand...
I also used Gibbs break-in oil. I've run it in for 1.5 hours so far and I seem to recall my parents were always told to break-in their new cars for 500 miles before changing to regular oil, of course, this was 50 or so years ago.
 
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