Oil
 

So I have a newbie question, so I bought my frs used and the previous owner was running the with 5-w30 oil and still has the same oil but the recommended oil is 0-w20 I've seen ppl on here who have said they use 5-w30 my question is why use that instead of 0-w20


I'll give you the rice noodle😘

Read the manual. Both are acceptable. One is thicker for higher temps other is thinner for mpg.

Oil
 

Dude I bought it from lost the manual that's why I'm asking but thanks bro 👌🏽👌🏽 would be OK to just switch over to 0-w20


I'll give you the rice noodle😘

You can easily find a manual to download. Or you can read the second sentence of my last post.

Thanks and my second question is would it be safe to just switch over from 5w30 to 0w20 or should I flush out the old oil first ?


I'll give you the rice noodle😘

I reckon it won't matter to the engine.

I'd just switch ..... no flush necessary.

Why do some folks like the thicker oil ?....... maybe, some are old school (thicker is better) .... :)

(NOW, folks, don't go making something out of THAT!)


humfrz

If you live in a place that's much warmer such as CA it's probably smarter to run a 5w-30 oil just due to the fact that the 0w-20 is a much much lighter oil and is meant for colder climates. I was recomended to switch to 5w-30 on my last oil change for this very reason.

Have you ever read on some of the oil bottles "Super High Mileage" or "Max Life" or "high performance"? well the 0w-20 would say "better fuel economy" on the bottle. Truth be told I have not noticed a big decrease in fuel economy since switching to 5w-30. Just switch and save your engine from thin oil :p

You won't need to flush it, in fact I'm pretty sure flushing isn't Toyota or OEM protocol and if you ever go a dealer or auto shop that talks about flushing the engine walk away unless you know that's what the manual recommends on that car. In your case though start the car let it idle for a few minutes up to temp, then change the oil like you normally would. This is the manual for you btw:

http://i.imgur.com/YEADeMD.pnghttp://i.imgur.com/yxdZBGi.png

Ignore the "Subaru Approved" stuff any 0W-20 oil will do.

Also the way my Dad taught me was this, the W in the oil code stands for winter, the second number pertains to weight of the oil at high temps like this chart shows:
http://i.imgur.com/fL5jhZI.png

I suspect the last owner chose to ditch fuel economy in favor of high ambient temperature performance

Sweet thanks guys I appreciate this🙌🏽🙌🏽🙌🏽🙌🏽


I'll give you the rice noodle😘

Interesting.
The 2016 Scion Owners Manual (almost begrudgingly) says you can use 5W20 if nothing else is available but you must switch back to 0W20 at the next oil change.


I just bought mine and winter's coming so I will continue to use 0W20 but I will be looking into possibly switching to 5W20 during the summer...

At temperature they'll run the same, there's not reason to, at optimum temperature they'll both be 20 weight oil. The difference is at a cold start 0W20 is very slightly thinner than 5W20 at operating temperature, 0W will be thinner at start up therefore lubricate engine better every time you start your cold engine.

OP had 5W30 which is not the same as ours

So then what is the benefit of 5w30 besides temp of oil ?


I'll give you the rice noodle😘

5w30 motor oil is synthetic motor oil that has a viscosity of 5 in low temperatures and viscosity of 30 at higher temperatures, usually 100 degree Celsius.

It's more of a disadvantage as it is thicker at the engines operating temperature, you will also get worse gas mileage and I also get the sense you aren't reading what anyone has posted here, go back to 0w20 and call it a day

0w20 which is recommended has a viscosity of 0 at low temps and a viscosity of 20 @ 100 C
That means it's going to be easier to turn over due to a less thick oil at low temps and also less of a load at high temps

I live in OC too. If you just daily and occasional canyon either is fine. If you are fi or do track days every weekend you'll want an oil cooler before you think about oil weight.