CleanSump
Site Donor 2026
Last year I gave my son-in-law (SIL) some of my Euro A/3 B/4 5W-30 stash w/ a MANN filter and he took it with his Beemer to his local garage that charges him$25 to change his oil when he supplies the oil and filter.
He called from the garage when the mech insisted his BMW required 0W. He told the mech an aeronautical engineer gave him the oil. Mech got on the phone and said the 5W won't flow fast enough in Winter!
I asked when he expected the temps to drop below -20F in Washington DC. 
I heard some cursing in Spanish in the background and then my SIL said he was going to come by for me to teach him to do his own.
He called from the garage when the mech insisted his BMW required 0W. He told the mech an aeronautical engineer gave him the oil. Mech got on the phone and said the 5W won't flow fast enough in Winter!
I heard some cursing in Spanish in the background and then my SIL said he was going to come by for me to teach him to do his own.