Motor Oils - viscosity, and other qualities?

4K8KW10 · 14 Nov 2020 at 20:05

Is it safe to use 0W-50 Eneos Sustina? Has anyone tried it and how does it compare to 5W-40?

ENEOS PREMIUM MOTOR OIL SUSTINA
Eco-friendly Ultra-fuel-saving Engine Oils

In recent years, energy conservation has progressed and the interest in the environment of emissions such as carbon dioxide is growing. Therefore, automobile manufacturers are increasing the production of lowemission certified vehicles and fuel-saving standard achievement cars year by year. In order to achieve fuel efficiency standards, the engine has been designed by introducing a variety of technologies, and also the engine oil has been expected the fuel-saving effect by lowering the oil viscosity. SUSTINA is gasoline engine oil that achieves much higher fuel-saving performance and engine protection performance than conventional oil by ENEOS original technologies. While average vehicle age is extended, SUSTINA is the ideal highperformance oil to the engine.

2. Performance SUSTINA indicates the following three performances. (1) Fuel-efficiency improvement : 2% up (at maximum) * (2) Fuel-efficiency performance endurance: Doubled * (3) Cleaning performance endurance: Doubled* * Comparison with GF-4 existing fuel-efficient oil (same viscosity grade)

tom_nieto · 14 Nov 2020 at 20:07

Surely you just use the correct oil viscosity for your engine? Why wouldn’t it be safe to use 0w50 oil if that’s what your engine requires?

The Running Man · 14 Nov 2020 at 20:10

Viscosity at 100c is 70% more than 5w30 and 20%+ than 5w40... what's it for a bus?

4K8KW10 · 14 Nov 2020 at 20:12

tom_nieto said:
Surely you just use the correct oil viscosity for your engine? Why wouldn’t it be safe to use 0w50 oil if that’s what your engine requires?

The issue comes in winter when it is more difficult to start up the engine and the fuel consumption during the first several minutes is significantly increased.
I have always used 5W-40 or 10W-40 but I'd rather want to experiment and see if the engine work can be improved?

tom_nieto · 14 Nov 2020 at 20:15

What car is this for? Just use what the manufacturer recommends... you risk engine wear (albeit small risk) if your oil spec is out.

4K8KW10 · 14 Nov 2020 at 20:18

tom_nieto said:
What car is this for? Just use what the manufacturer recommends... you risk engine wear (albeit small risk) if your oil spec is out.

Mazda 3 1.6 CiTD 80kW 109hp 2005. The engine is French, Peugeot.

tom_nieto · 14 Nov 2020 at 20:25

In fairness, as long as it’s got oil it’ll probably do fine.

Nasher · 14 Nov 2020 at 20:27

Stick with 5W-30 or 40.

4K8KW10 · 14 Nov 2020 at 20:33

tom_nieto said:
In fairness, as long as it’s got oil it’ll probably do fine.

Nasher said:
Stick with 5W-30 or 40.

Ok, but which brand?
The oil makes a difference - for example the Eneos Sustina helps for very quiet engine, while with other, cheaper options are much louder and more resembling to older diesel engines.

Nasher · 14 Nov 2020 at 20:36

Any of the good brands. I use Valvoline in the Lotus and that runs nicely.

Scuzi · 14 Nov 2020 at 20:43

4K8KW10 said:
Ok, but which brand?
The oil makes a difference - for example the Eneos Sustina helps for very quiet engine, while with other, cheaper options are much louder and more resembling to older diesel engines.

Are you on commission?

Put in an oil that meets the manufacturers specification. I doubt you will notice any discernible difference to noise or anything else on that engine with different oils.

Never underestimate the power of snake oil though!

4K8KW10 · 14 Nov 2020 at 20:53

It isn't a bad engine, though. I measured 71 mpg fuel consumption!

The Running Man · 14 Nov 2020 at 21:20

I'll stick to my 10l of fuchs titan gt1 flex 23 for 40 quid.

-Ad- · 15 Nov 2020 at 08:54

4K8KW10 said:
It isn't a bad engine, though. I measured 71 mpg fuel consumption!

Whilst sat up the chuff of a lorry with it towing you at 56mph?

4K8KW10 · 15 Nov 2020 at 10:01

-Ad- said:
Whilst sat up the chuff of a lorry with it towing you at 56mph?

koooowweeee · 15 Nov 2020 at 10:59

-Ad- said:
Whilst sat up the chuff of a lorry with it towing you at 56mph?

It's was on a down hill. Stopped measuring when he got to the bottom

4K8KW10 · 15 Nov 2020 at 11:48

koooowweeee said:
It's was on a down hill. Stopped measuring when he got to the bottom

No, I run 1450 kilometres with 57.5 litres of diesel

There are ways to drive efficiently and with high fuel economy. Just be gentle with the acceleration pedal.

koooowweeee · 15 Nov 2020 at 14:21

4K8KW10 said:
No, I run 1450 kilometres with 57.5 litres of diesel

There are ways to drive efficiently and with high fuel economy. Just be gentle with the acceleration pedal.

I can't see you getting 71mpg. High 50's at best. Unless you only drive in the middle of the night with no traffic.

4K8KW10 · 15 Nov 2020 at 14:37

koooowweeee said:
I can't see you getting 71mpg. High 50's at best. Unless you only drive in the middle of the night with no traffic.

Very light traffic in the worst case and mostly highways - there is no problem with the traffic on our highways.

moon man · 16 Nov 2020 at 05:34

Surprised about the suprise on 71mpg as my 18 year old Skoda will happily do 65 mpg ,as regards oil the main dealer works best for me ,they have a recommended oil on the shelves for £23 ish a 5 /40 in my case did 270k from new in my last Skoda ,did occasionally try a 10/40 semi but would result in afew seconds of top end rattle on start.