Fuchs

[Mondeo]

I dun think so, my late renault was used Trisycn fr first 3 yrs, and engine was silky smoothy..Oooouuuuu

[Magfocus]

Waaaah....such a glowing endorsement!

 

So am i right to say that thinner oils are better for newer cars and thicker ones as more suitable for older engines??

 

Still wondering how the service interval for the Focus would be like. Does RM use syn oils or mineral oils? My prev honda serviced by Kah mtrs used only Shell Helix ultra and a 10k service interval

[Turbobrick]

Older cars or cars that have been on Mineral should look out for the lower viscosity first, so 20W-50 would be a good visco to start off with as it won't be too thin at cold. Also the higher visco plays a part when the engine is pushed, ensuring the oil does not leak out when hot.

 

Newer cars are recommended thin visco oils to improve fuel economy IMHO.

[Magfocus]

So you reckon that 0W-40 is good for my Focus?? [angelic]

[Turbobrick]

Read up your owner's manual and see what Ford recommends. For max economy a xW-30 oil would be best and for high temp protection a xW-40 will do better.

[Mondeo]

Not really bro,

Thin oil make easy to run around inside engine to minimise wear-out since new engine are very fitted... then thicker oil good for when engine in high rev.

If U want yr babe last long, frequently change the engine oil is the best.

[Mondeo]

He can only read his owner's manual on tomorrow!

[Magfocus]

i see, so xW-50 would be max protection at high temp?

[Magfocus]

Hahaahha thats true!

[Turbobrick]

Yeah my oil change is every 5000km so not long enough for oil to degrade too!

[Turbobrick]

Essentially 5W-50 gives U good cold start with ample high temp protection. However the thin visco at low temps may not suit older cars with worn seals and gaskets.

[Blue850r]

HI,

 

Viscosity range is not really important although much theory has been on the selection of oil. In your practical life any xW-40/50 is O.K. be it new or old car.

 

I thought I could save some fuel by putting in a lighter oil 5W-30 but same consumption. Sometimes, I sent my Accord to service by Kah Motor which uses Shell Helix Ultra 5W-50. With supposively thicker oil, fuel consumption is also same.

 

So why bother to study so hard for viscosity. We are not in Formula one. The difference is in the lab test and theory behind.

 

Next is about good oil and not so good oil. Those Delphi forum people who claim RP oil as very good just didn't experience anything bad. Even you put in China oil, SAE 40, your car will still run well. You will only tell that the oil is not doing its job well by say after 120,000 kms. By then , I think most of us had changed car already.

[Magfocus]

So i guess sticking to any major brand oil with xW-40 or 50 should be fine then

 

Thanks bro