Mixing engine Oils
- Thread starter benv6
- Start date
Mad Professor
Active member
Wont do any harm IMHO as long as both are fully synth
Real bad idea to just change oil grades. Manufacturers specify oils grade and other factors for very good reason
benv6 said:ronk said:
I want to see what would be the MPG difference, I heard you would get better MPG with 5w40
If that's your reason then you're going the wrong way, the 0w30 is a less viscous oil inducing less drag on the engine
I would be surprised if you measured much difference though :?
Rob
Agree with Rob , , you are more likely to see a worsening of MPG going 5w40 & a twin turbo engine where oil is a real factor in keeping running temps down i would be spending more time choosing the right oil than deciding what grades :?
5w 30 will see you right , as for which brand ?
Do some digging & some reading but in my mind Millers is the one for both cold start & hot running cycles
5w 30 will see you right , as for which brand ?
Do some digging & some reading but in my mind Millers is the one for both cold start & hot running cycles
Agree with Rob here, don't follow the logic. Interested to know the result though.Smartbear said:benv6 said:ronk said:
I want to see what would be the MPG difference, I heard you would get better MPG with 5w40
If that's your reason then you're going the wrong way, the 0w30 is a less viscous oil inducing less drag on the engine
I would be nice surprised if you measured much difference though :?
Rob
As these chaps quite correctly say, don't mix them. Properly cheap skate thing to do...
Also, better MPG, you're going the wrong way in viscosity as is already said.
Finally, the only reason I've ever heard of people going thicker is to reduce any very slight misting/leaks that are showing on seals due to thin oil.
Also, better MPG, you're going the wrong way in viscosity as is already said.
Finally, the only reason I've ever heard of people going thicker is to reduce any very slight misting/leaks that are showing on seals due to thin oil.