Sputnik775

I messaged FP today to see if they would tell me what they use for transmission fluid in their school cars and they did. With a quick reply btw. Their reply was "Castrol BOT 350 M3 75w".
Couple questions to the forum - Have any of you used this in your mustang? Is this stuff really that good or does Ford have a contract of some sort with Castrol...
I'm coming up on 16k in my 2017 GT pp and was thinking about changing oil. I don't have any transmission issues, so would like to keep it that way. I do occasional autocross and track days.

proeagles

I never heard of that in a transmission. Are you sure they didn't mean engine? The GT350 uses that viscosity of oil titled under Motorcraft and the dealer is the only place you can get it.

Sputnik775

I msg them and they are going to verify. will post an update... but I think you are correct @proeagles

08'MustangDude

The dealer is NOT the only place to get other 5W50 oil though...

https://shop.advanceautoparts.com/p/...2c6f/8020612-P

https://www.amsoil.com/shop/by-produ...tic-motor-oil/

https://www.napaonline.com/en/search?text=5w50

Sputnik775

I corrected the information in the original post and this is what they use for all of their mustangs "Castrol BOT 350 M3 75w".

proeagles

At the time of my purchase no one had this oil pretty much as no one had the correct Mobil 1 oil for the 2019 Corvette for about 6 months. The additives required by Ford were not in any of the oils mentioned at the time.

MikeHTally

75W in an engine? That sounds like tranny or diff fluid.