Thread: Engine Assembly Lube

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every engine i have rebuilt i've used a 50/50 mix of stp/gear oil(90w).along with 30 weight nondeturgent motor oil.it works for me.

this is for break in only after 500 miles i drain out the oil and use 10-30 syn penzil oil with a can of stp. i'm old school but never have i lost a engine except i was racing a 302 in my 69 galaxie when a lifter came apart lost all oil pressure/the lifter was made in taiwan,this was the early 80's when a lot of people were packing imported parts in their boxes it was a trw lifter. i did not know that they were doing this or i would not have bought their lifters.