What viscosity oil is best in Hot Weather?

[Fisher23]

What viscosity oil is best in Hot weather (50-110 degrees F)?

When I look at the Euro Recomendations for Oil it says
20W-50 or 15W-40
vs
the USA 0W-20 Oil

I am thinking of switching to 5W-30, is anyone else running that in hot weather?

 

[gaijin]

What viscosity oil is best in Hot weather (50-110 degrees F)?

When I look at the Euro Recomendations for Oil it says
20W-50 or 15W-40
vs
the USA 0W-20 Oil

I am thinking of switching to 5W-30, is anyone else running that in hot weather?

View attachment 4123059

5W-30 seems to be the ticket:

I have been using 5W-30 in mine here in the high desert for the last several years where temps range from 10 - 115 DegF - no problems so far!

HTH

 

[CanadianRockyCruiser]

Many folks here are running 5w30 in diverse climates in the 3URFE 5.7. I run it in my Tundra from 35 degrees C to -40 C.

 

[gasman4u]

What viscosity oil is best in Hot weather (50-110 degrees F)?

When I look at the Euro Recomendations for Oil it says
20W-50 or 15W-40
vs
the USA 0W-20 Oil

I am thinking of switching to 5W-30, is anyone else running that in hot weather?

View attachment 4123059

5W30 is good. You'll be fine.

 

[sdnative]

Lots of posts on 5W-30, even a mega thread. I run it in my truck (So Cal)

Thread 'Update: 5W-30 & Heavier Recommended RoTW'

Jun 21, 2020

Update: confirmed that the 3UR is recommended to run a whole suite of heavier oils. Screenshots from UAE 200 5.7L manual below. More proof that environmental regulatory agencies have handcuffed Toyota in the states.

I spent the better part of yesterday’s afternoon researching oil viscosities, manufacturer recommendations, CAFE/EPA laws, and Toyota’s recommendations in other parts of the world.

I have come to the conclusion that Toyota recommends 0W-20 in their modern engines due to the EPA requirement that the oil used to measure fuel efficiency ratings is required, by law, to be...

• 04UZJ100
• Replies: 714
• Forum: 200-Series Cruisers

• 

 

[Mingus Dew]

Running 5W-30 here in South Florida. Just made the switch on my last oil change.

The master thread posted above is a great resource.

 

[studawg]

Ive been running 5w-20 in mine for the last few years here in SC but Im switching to 5w-30 on my next oil change.

 

[dms]

0W-30W in winter and 5W-30W the other 3 seasons in both the 18 LC and 24 LX.

 

[GrouchyTech]

5W-30 for me, year-round.