It seems 5W20 is rather thin for summer / off-road / towing use, no? Are people really sticking with 5W20 in these conditions, or using something else like 10W30?

Thanks!
js.

 

i am running 5w20 Royal Purple and it gets in 90's and i dont seem to be having any issues

 

Viscosity recommendations are not made just based on ambient temperature these days. Most actually depend on bearing tolerances and technical things like that. I would not go to a higher viscosity oil due to this.

 

x2......
.
.
.

 

I couldnt agree more

 

x4..........

 

forgot to quote x4..........

 

Just do what the manual says.

Some manufactures say heavier oil in hotter climates. Some dont.

 

I am going to go against the grain here... here is my logic.

The Base CSX (2.0L I4 6000RPm Redline, 155HP) suggests 5w20, the Type-S CSX (2.0L I4 I've shifted at 8500, 197 HP) recommends 5w30

After reading why manufacturers are recommending 5w20, it appears it is because the lighter oil provides slightly better fuel economy and a touch more power at the cost of engine wear. Engine failure is more likely with a higher performance engine such as in the Type S so they suggest a heavier grade.

I'm going to go with 0w30 from Amsoil in both my vehicles.

Yes I'm bringing back a zombie thread :p

 

At least you're using the right terminology. What is a "CSX"? Is that an Acura product? I think it is an RSX here in the States. CSX is a railway. It could be that the Type-S has looser bearing tolerances...for more horsepower.