Havoline Energy 5w30

[GTO52]

I changed from using Castrol Magnatec(10w40) for years to Caltex(Chevron) Delo 400(15W40).

On my 1995 2.4SRX(22R Engine with 135000 miles on the clock) Toyota Hilux I have noticed an improvement(oil pressure light goes out almost immediatley and cam chain less noisey on start up) but on my other 2002 Toyota Hilux 2700i(3RZ-FE Engine with 100000 miles on the clock)fuel consumption seems to have increased since changing to Delo.

So I have been looking at maybe using a synthetic oil more suited for petrol engines like Castrol EDGE 5w40.

But then I came across Caltex Havoline Energy 5w30 which claims up to 6% better fuel consumption.

I am just worried that a viscosity of 30 is a bit low for our climate in South Africa?(Temperature in some places I go to reach well over 35C/95F in summer)

Also the vehicle is a 4x4 so it works hard sometimes on trails in these hot temperatures.

Although in the FAQ on there website they say it isn't a problem with modern engines which have smaller tolerances.

Here is the link to Havoline Energy:

http://www.havoline.com/products/sa/...il_energy.html

And the FAQ:

http://www.havoline.com/products/sa/faq.html

Any opinions?

 

[sprintman]

Obsolete but I use it in the Outback. It was a joint development project by Jaguar, Ford, Volvo and maybe others. They spent millions developing this oil and even more millions marketing it, then dropped it o'night. People I trust told me if I could find any buy all of it which I did.

 

[crinkles]

you'll find in the US that 20 wt oils get used in petrol engines all the time in texas, and all the other HOT desert states.
Toyota Australia uses 10w30 as the standard oil.
what does your bakkie's owner's manual say?

 

[GTO52]

Bakkie's owners manual just has a temeprature chart with the various viscosities and ambient temperatures.
It doesn't actually specify one viscosity.
But for 5w30 on the chart it shows a max temp of 4degC/40F(it doesn't even get that cold here in Cape Town in winter!)

 

[crinkles]

yes my 2AZ-FE motor also has a max temp for use of 5w30, it is omething like 10 deg C. 10w30 is OK though for temps in excess of 40 deg C.

the reason why 5w-XX oils are OK in the US may be that thye have better base stocks that are shear stable, while in aus and SA the base stocks may not be able to handle the higher temps (esp those made in the 80 - 90's when the owners manuals were written). but recently a lot of 5w30's have been showing up here anyway and they should be just fine.

i would use the lowest viscosity from your chart that also gives the high temperature protection beyond 40 deg C. a 5w-40 (or 5w-50) synthetic could be just the thing for your motors...

 

[GTO52]

I had a look around and there don't seem to be many 5W30 oils here in South Africa 5W40 seems to be much more common.
I think I am going to either go for Shell Helix Ultra 5W40 or Castrol Edge 5W40.Which is better?
The Shell is cheaper and is API SM spec while the Castrol Edge API SL is more expensive.
Both are ACEA A3 spec.

 

[ARCOgraphite]

Shell Helix Ultra.