QUICK HELP- Oil question, is it ok....?? Options

[Silver94CelicaOw...]

Ok guys, quick question.....is it ok if im running 5w-30 grade oil in my 5s-fe?? After i already changed my oil today to 5w-30 i realized that the oil cap and owners manual both said to use 10w-30....so my question is, is it perfectly safe to run the new 5w-30 in my engine in this summer heat, or should i change it back to 10w-30?? The owners manual sounds like the 5w-30 is meant for colder operating temps, and i dont wanna screw my engine up by runnng a thinner oil.....but at the same time i dont wanna drain the oil back out if its fine to use it. SOMEONE HELP ME OUT!!

[1858]

At least it pretty easy to drain & refill the oil. Won't even need to jack up the car.

Yeah, sure thing; glad to help......hrmmm I guess knowledge comes with old age.....oh crap I'm gettin old.......

Now are you planning on reusing that 5W-30 oil that you drained out? I wouldn't if I were you, because the oil can pick up a lot of contaminates in the process of draining (oil dripping out of the drain hole can pick up dirt and other junk that's on the oil pan's outside surface, and the oil drain pan you use can by dirty (mine is never really clean and I use it for doing the brakes and coolant changes also). If it's dino oil, get rid of it since it's cheap; like 1 bux a bottle when it's on sale.