In the context of an automotive forum, "Read the Fucking Owner's Manual"
Q: Should I use 5W30 or 20W50 in my engine?
af RTFOM 5. juli 2009
Read the fucking online manual.
Dude, I have no time to explain this stuff to you. The manual is online. RTFOM.
af Yannick Semail 7. januar 2007