Should i go to higher viscosity oil?

I don’t know if it is needed, but I started using
0w-40 weigh at around 60k miles. I have almost 120k miles and no oil usage. Have you cleaned your EGR?

 

Do manufacturers recommend going to higher multi visc at some mileage point?
upon last look ... isn't it still 0w-20 for most manufacturers?
.

 

Toyota’s recommendation in several countries is to run 40 weight or even 50 weight. 0W-20 is water and is to meet CAFE standards.

 

oh
still ... w/ property in 2 other states that get snow ... it's nice to know the visc can sometimes be on the thin side.

.

 

I'd use high mileage formulation 0W-20 rather than higher viscosity.

moto g(7) power ?

 

That’s what the 0 weight is for.

 

If you like to swell your seals. Stick with normal.

 

The first # "0" protects you when oil is cold, whether 0W-20 or 0W-40, 2nd # determines viscosity when oil warms up to operating temp.

moto g(7) power ?

 

And that’s the most important number at start up.

 

Don't miss the post about the EGR system. Ignore the EGR and you won't have to worry about the oil in your Prius anymore.

There's also 0W-30 oil, if you don't want to go up to 40...

 

Engine starts and stops a lot in a Prius. So after warm up your engine is trying to pump 40W oil when it was originally pumping 20W. But it's good to know that 40W and 50W are actually recommended in other countries. I did not know that. Thank you.

moto g(7) power ?

 

My 2010 prius is on 248k, burns similar or maybe a bit more than yours, I think use what recommended and just add 1qt or so 5w-30 when you add oil.
And it's better to top-off 0w-20 during cold season and thick one in warm season.
Normally I use high mileage one, but after this winter I ll give a try to 0w-30 for summer

Posted via the PriusChat mobile app.

 

That's "moderate" consumption, definitely something going on there, valve seals or piston rings. Maybe a clogging PCV valve as well? If the rate is steady maybe not worth chasing, other than trying the various liquid fixes.

Like other responders, since you don't mention EGR: it's definitely due for an inspection/cleaning. As it clogs the engine combustion chamber temps rise, never good.

 

I'm thinking that the best decision might be to go in the other direction - and to use the new 0w16 recommended for Gen 4's. Walmart is carrying the Mobil 1 version. I'm not sure that CAFE standards are all that motivated this move from 0w20 to 0w16. I'm guessing that detergents, additives, and flow properties related to low-emissions, start/stop, and other Hybrid ICE stress played a bigger role. When these Prius engines are doing their stop/start cycles in 10 degree weather, a 40 or 50 weight oil is pretty heavy. Mobil 1's consumer data on 0w16 puts an emphasis on cold flow, fast protection, and active cleaning agents that are hard to use in thicker oil. I'd be interested to see what countries are seeing recommendations for heavy oils in tight tolerance, low-emission engines. Toyota's not going to spend money back-spec'ing older vehicles....but it's fun to speculate

I'm from the 1970s 10w40 days, so I love thick heavy motor oil as much as anybody. But I'm not sure we're in Kansas anymore.

 

5W30 was the gen 2 spec. Couldn't hurt to try that for an oil change.

 

Your engine will never cool down to the point that 40 weight is gonna thicken up to be restricted in flowing, especially in normal stop and go traffic.

 

I checked a Mexican owners manual for was it a Yaris? Quite interesting practicing my Spanish.... Sure enough up to 20W-50 but for high ambient temps. Chart on p 302 I believe...

moto g(7) power ?