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engine oil viscosity vs fuel consumption..


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#1 jenniferf

jenniferf

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  • Toyota Model:Toyota Land Cruiser LC200 V8 Sahara

Posted 18 June 2010 - 12:18 AM

g'day everyone..

just to share some experiment results with you all.. hope you all can add in some experience results too. thank you and cheers!


engine type: LC200 4.5Liter V8 Twin Turbo Diesel
test mileage: 5,000KM on each type of oil (5W-40 and 10W-40)


oil: 5W-40 SHELL Fully Synthetic
40% more expensive than the other oil (10W-40)
fuel consumption: 11.8Liter/100KM (average after 5,000KM)
engine very quiet and feels very "light" standing start and pick up
after 4000KM, my engine had consumed 1Liter of engine oil!


oil: 10W-40 SHELL Synthetic (me too wondering does this mean semi or fully??)
much cheaper oil compared to the first option
fuel consumption: 14.8Liter/100KM (average after 5,000KM)
engine is rough and loud and it is very heavy from standing start
after 5000KM, engine oil is exactly the same, zero consumption

my conclusion.. i am now back on the expensive 5W-40 and vow to check my engine oil regularly just in case i need a "top-up" now and then.. hey especially those who are using diesel engine, which type of oil are you using? do kindly share with us.. thank you very much and cheers!!

best regards, jennifer

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#2 dugite57

dugite57

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  • Toyota Model:LC200 GXL V8 TTD & LC100 GXL 4.7V8 Petrol

Posted 11 September 2010 - 11:43 PM

g'day everyone..

just to share some experiment results with you all.. hope you all can add in some experience results too. thank you and cheers!


engine type: LC200 4.5Liter V8 Twin Turbo Diesel
test mileage: 5,000KM on each type of oil (5W-40 and 10W-40)


oil: 5W-40 SHELL Fully Synthetic
40% more expensive than the other oil (10W-40)
fuel consumption: 11.8Liter/100KM (average after 5,000KM)
engine very quiet and feels very "light" standing start and pick up
after 4000KM, my engine had consumed 1Liter of engine oil!


oil: 10W-40 SHELL Synthetic (me too wondering does this mean semi or fully??)
much cheaper oil compared to the first option
fuel consumption: 14.8Liter/100KM (average after 5,000KM)
engine is rough and loud and it is very heavy from standing start
after 5000KM, engine oil is exactly the same, zero consumption

my conclusion.. i am now back on the expensive 5W-40 and vow to check my engine oil regularly just in case i need a "top-up" now and then.. hey especially those who are using diesel engine, which type of oil are you using? do kindly share with us.. thank you very much and cheers!!

best regards, jennifer



#3 dugite57

dugite57

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  • Toyota Model:LC200 GXL V8 TTD & LC100 GXL 4.7V8 Petrol

Posted 11 September 2010 - 11:44 PM

I guess that's why my dealer, when asked what oil should I use, said 10/40 mineral, doesn't want me coplaining about it being burnt.


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