6 – The Oil Change HP Boost:
The oil change boosts HP by 5% over the stock level on all cars:
NASCAR car – Stock HP = 849 HP – Boosted HP = 892 HP – 43/849 = 0.05
Veyron ’13 – Stock HP = 1261 HP – Boosted HP = 1324 HP – 63/1261 = 0.05
The Oil Change boost resets the Oil Deterioration Gauge and the boost can be done anytime.
There is a myth where you must do the oil change as soon as you have purchased a new car or else you might lose the boost, but this is not true: e.g. I did an oil change on a NASCAR car for the first time after the car had over 1800 PD miles on it and the boost was still 5% bringing the HP up to 892 HP.
The Oil Change boost lasts for 200 km and then drops linearly 1% (of the HP gain) for every km driven from 200 km to 300 km.
Early test (in PD miles [before I knew better]) with NASCAR Car:
1324 hp – 1261 hp = 63 hp boost (5% boost)
Oil change was performed at 2,064.3 miles on car.
Drove on Route X = 18.82 PD miles
HP – Mileage on Car – Distance driven & Total Distance Driven in PD miles
892 HP – 2,084.2 – 19.9 26.3
892 HP – 2,104.5 – 20.3 40.2
892 HP – 2,124.3 – 19.8 60.0
892 HP – 2,144.7 – 20.4 80.4
892 HP – 2,164.3 – 19.6 100.0
892 HP – 2,184.3 – 20.0 120.0 = 193.1 km lost 11 hp
881 HP – 2,204.6 – 20.3 140.3 = 225.8 km lost 14 hp
867 HP – 2,224.4 – 19.8 160.1 = 257.6 km lost 12 hp
855 HP – 2,243.8 – 19.4 179.5 = 288.9 km lost 12 hp
849 HP – 2,263.0 – 19.2 198.7 = 319.8 km lost 6 hp