We Claim:
1. Use, in an electric or a hybrid vehicle, of a fluid having a boiling point in the range of from 200°C to 400°C and a boiling range below 80°C, said fluid comprising more than 95% by weight isoparaffins and less than 3% by weight of naphthens, a biocarbon content of at least 95% by weight, containing less than lOOppm by weight aromatics.
2. Use of claim 1, in an electric vehicle.
3. Use of claim 1 or 2, for cooling the motor.
4. Use of claim 1 or 2, for cooling the power electronics and/or the rotor and/or the stator of the motor.
5. Use of claim 1 or 2, for cooling the battery.
6. Use of claim 1 or 2, for lubricating the motor.
7. Use of claim 1 or 2, for lubricating bearings between rotor and stator and/or the reducer of the motor.
8. Use of claim 1 or 2, for lubricating the transmission.
9. Use of claim 1 or 2, for cooling and lubricating the motor.
10. Use of claim 1 or 2, for cooling the motor and for lubricating the transmission.
11. Use of any one of the preceding claims, wherein the fluid has a boiling point in the range of from 220°C to 340°C, preferably 250°C to 340°C.
12. Use of any one of the preceding claims, wherein the boiling range is 240°C-275°C or 250°C-295°C or 285°C-335°C.
13. Use of any one of the preceding claims, wherein the fluid is obtainable by the process comprising the step of catalytically hydrogenating a feed comprising more than 95% by weight of a hydrodeoxygenated isomerized hydrocarbon biomass feedstock or a feed comprising more than 95% by weight of a feedstock originating from syngas, at a temperature from 80 to 180°C, at a pressure from 50 to 160 bars, a liquid hourly space velocity of 0.2 to 5 hr1 and an hydrogen treat rate up to 200 Nm3/ton of feed.

14.Use of claim 13, wherein the feed comprises more than 98% by weight, preferably more than 99% by weight of a hydrodeoxygenated isomerized hydrocarbon biomass feedstock, and more preferably consists of a hydrodeoxygenated isomerized hydrocarbon biomass feedstock, and especially where the biomass is a vegetable oil, an ester thereof or a triglyceride thereof, the feed being more preferably a HVO feed, or wherein the feed comprises more than 98% by weight, preferably more than 99% by weight of a feedstock originating from syngas, more preferably from renewable syngas.
15. Use of claim 13 or 14, wherein a fractionating step is carried out before the hydrogenating step, or after the hydrogenating step or both.
16. Use of any one of the preceding claims, wherein the fluid contains less than 50ppm by weight aromatics, and preferably less than 20ppm by weight.
17. Use of any one of the preceding claims, wherein the fluid contains less than 1% by weight of naphthens by weight, preferably less than 500ppm and advantageously less than 50ppm.
18. Use of any one of the preceding claims, wherein the fluid contains less than 5ppm, even less than 3ppm and preferably less than 0.5ppm sulphur.
19. Use of any one of the preceding claims, wherein the fluid has a biodegradability at 28 days of at least 60%, preferably at least 70%, more preferably at least 75% and advantageously at least 80%, as measured according to the OECD 306 standard.