Does anyone know where I can purchase Castrol Syntec 5W-40 online? My local auto part stores do not carry 5W-40 (my Audi dealer uses Castrol Syntec 5W-40).

 

do they have 5W-30?? its better than 5W-40

 

See if one of these oils is available. I use Mobil 1 0W-40.

https://www.audiforums.com/m_16044/tm.htm

 

thats funny, i had trouble finding quaker state 5w40. the only place i could get it was at the dealer i used to work at, and then it was free...lol. i just ran out though so i used mobil1 10w30 for now. let me know if you find some cuz i need it.

 

Try this, gwagnerli:
Look up the website for your local auto parts chain-store (autozone, napa, o'reillys, what-have-you). See if they have available online, then you can usually have it sent to whichever store is closest to you, for pickup...