fully synthetic or semi oil

[Taggy]

Quick question, i know there are loads of different types of oils but what should i use for the 4EFTE, manuals say semi-synthetic but i know people use fully synthetic.

Semi or Full?

[nazzurro19]

i just filled mine with millers 10-40w semi synth

[rorenapier]

If your going on track then use a good high quality fully synthetic. Has a higher shear rating, and better protection.

[Taggy]

Full it is then

If your going on track then use a good high quality fully synthetic. Has a higher shear rating, and better protection.

[Jamie1st]

Fuchs Titan Race Pro S 5W-40 Fully Synthetic

[Sparky]

Full full full full full

I used millers xfs 5w40 competition oil

[Revo]

Surf a little and look at some friction figures for semi vs full you will be amazed at the difference full makes at higher revs.

Also while fully synthetic will cling really well and thinner aids quicker boost/reving when it comes to bearings impact resilience, thicker grades must be looked at.