hey, guys i have a 1992 400e with original 40,000 miles i need an oil change but dealer has a month wait an di want to take the car to another state so can i go go t ojiffy lube for this one time but what oil should i use i mean 5-40 or 5-30 deealer always put synthetic 5-40 in my car but jiffy lube doesnt has a 5-40 they told me to get the 5-30 so are they right about that should i get
help ASAP please
thanking you in advance \
mani: