READ THE OWNERS MANUAL ITS IN THE GLOVE BOX!
Any brand 90 wt. oil will do fine.
In all actuality there isn't really any certain brand that is best for it. It is recommended that you use mercon type F in either a manual or an automatic transmission
Answer10w30 motor oil is sufficient, but for longevity you wuold want to go with hondas brand of manual transmission oilactually u need to put 80w 90 gear oil in ur tranny only about a quart and a half
If it is automatic transmission you can use any brand of tranny fluid as long as it is AF fluid. If it is a manual transmission then use dot 3 brake fluid unless you can find clutch fluid, both work the same.
To change the transmission fluid on a 1964 V6 GMC truck, you will need the manufacturer manual.
Some brand names beginning with the letter V are Visa, Vonage, and Verizon.
if it is a manual transmission no gear oil!! regular 10w-40 motor oil any brand it does not matter
Transmission fluid is Dexron 3. The brand oil is your choice. The weight of the oil should be listed on the dipstick, fill cap, or owners manual. Probably 10W30
would be a 4L60E / 4L65E . Transmission.