0 mileage oil change = more bhp?

  • Thread starter Nielsen
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Can someone please explain why cars with 0 mileage get more bhp after an oil change? It makes sense on used cars but I don't see why new cars would have bad oil. Do they use some kind of magic oil at GT Auto or is there a logic explanation? Please don't confuse my question with engine break in.
 
Probably the right explanation, but here is another detail/theory: if you buy the car at the new car dealership, it has a little less HP then it should have according to the manufacturer IRL.

For example: I know for a fact that BMW advertises the M3 as having 426 HP. Bought it in GT, it had a bit less (can't remember the actual figure, must have been around 418/419). And when I went to change the oil, voilà: 426.
Happened again with the M5: only after the oil change did it have the magic 507 HP. These are the only ones I can remember from the top of my head.

What do you guys think? "GT oil brings out full potential" or something?
 
i changed the oil on a fully tuned 0 mile 599 and it went from 800 to 838
im pretty sure they get the oil from NASA
 
i changed the oil on a fully tuned 0 mile 599 and it went from 800 to 838
im pretty sure they get the oil from NASA

Actually no. It makes sense.
The oil most cars come with in real life tends to be a heavier weight that has a longer service life and protects a car that isn't necessarily serviced as often as it should be better. Switching to a lighter weight/performance oil in a vehicle, especially one that will see use on track can free up several HP.
 
Actually no. It makes sense.
The oil most cars come with in real life tends to be a heavier weight that has a longer service life and protects a car that isn't necessarily serviced as often as it should be better. Switching to a lighter weight/performance oil in a vehicle, especially one that will see use on track can free up several HP.

Huh? Most Asian and US cars come a lightweight oil between 0W20 and 5W30 for maximum fuel economy. People who do track days or who have a heavily modified cars tend to go to thicker oil for durability reasons. Some drag racers use super light oils, but that's an exception, not the rule.
 
I just noticed that when you change the oil, your car gets a switch!
I thought it was only if you repaint the car or buy a turbo etc.
My plymouth '70 had 0 switch, after the oil it was 1 :grumpy:
 
The first 100 miles driven is the break in period, after that you change the oil. It works on all cars even my 1970 Torino, your breaking in the engine and then changing the oil to gain the horsepower and proper oil your engine needs to run properly for its lifetime. Nothing in this game talks about lower weight oils thats all speculation.
 
I just noticed that when you change the oil, your car gets a switch!
I thought it was only if you repaint the car or buy a turbo etc.
My plymouth '70 had 0 switch, after the oil it was 1 :grumpy:

What do you mean by "switch"?
 
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