recommended oil
- Thread starter saddler
- Start date
GTti
Member +
10w30 10w40 and 10w50 are exactly the same thickness on a cold start... you lot need an oil lesson.
Also fully synthetic oil has better friction properties than semi synthetic and is less prone to shear, so there's not much point in sticking with semi synthetic.
10w40 or 5w40 will be fine, the 40 grade will give decent protection at high temperatures as well as good cold start protection. The w value is the oils ability to flow when cold, its viscosity has been modified to be thinner.
The bigger the gap inbetween the first and second numbers the more viscosity modifiers are in the oil.
Also fully synthetic oil has better friction properties than semi synthetic and is less prone to shear, so there's not much point in sticking with semi synthetic.
10w40 or 5w40 will be fine, the 40 grade will give decent protection at high temperatures as well as good cold start protection. The w value is the oils ability to flow when cold, its viscosity has been modified to be thinner.
The bigger the gap inbetween the first and second numbers the more viscosity modifiers are in the oil.
sx_turbo
Lifer
i dont remember saying there cold start properties were different.
i said that 0w40 will prob be to thick when cold especially on very cold mornings. meaning that 0w40 is different to 10w40.
i said toyota recomend 10w30.
most people use 10w40
and you could use 10w50 for extreme temperatures as the 50 means the oil can withstand the high extreme temps of circuit racing.
i explained it better that time.
sx_turbo
Lifer
http://www.toyotagtturbo.com/old/viewthread.php?tid=34918#pid451677
according to oil man, it says that 0 is thicker, not thinner as you are suggesting.
or i may be reading it wrong, let me know wot you think as i think this could be a good discussion, and very useful to the site.
according to oil man, it says that 0 is thicker, not thinner as you are suggesting.
or i may be reading it wrong, let me know wot you think as i think this could be a good discussion, and very useful to the site.
i have to agree that 0w is thinner cold and the higher the second number it holds it's the correct thickness to higher tempreture. Thats why race oil is like 0w100 but cost crap loads. Millers 10w60 fully synthetic reasonable price but tbh aslong as it's atleast 10w30 your alright than it is just down to how much you want to spend.
GTti
Member +
Aye I think you just read it wrong sx_turbo.
Racing oil is more like 15w50 , 15w60, 20w50 etc. Less viscosity modifiers (These burn up) in the oil as you don't need the cold start protection, but the quality of base oil even though it may be the same grade is far better. Thats why redline 15w50 will set you back almost £50.
There is a downside to thicker oil, if you have thick oil in a road car and it rarley operates at high temperatures then there will be more friction against engine components. Friction causes heat, heat causes damage.
Having said that, thicker oil can compensate for wear in older engines.
Racing oil is more like 15w50 , 15w60, 20w50 etc. Less viscosity modifiers (These burn up) in the oil as you don't need the cold start protection, but the quality of base oil even though it may be the same grade is far better. Thats why redline 15w50 will set you back almost £50.
There is a downside to thicker oil, if you have thick oil in a road car and it rarley operates at high temperatures then there will be more friction against engine components. Friction causes heat, heat causes damage.
Having said that, thicker oil can compensate for wear in older engines.
Jay
Admin
This is the first time it's been asked on the new site so let's answer the question and discuss. That way we can resolve the issue and store it for future use.
sx_turbo
Lifer
any 10w40 fully synthetic/semi synthetic oil i think would be best, i personally use millers 10w40 fully synthetic, i use fully syn because it heat capabilities are better than semi syn.
oh and i used to have a rattly engine but since i used the millers oil it seems to have quitened it down somewhat.
oh and i used to have a rattly engine but since i used the millers oil it seems to have quitened it down somewhat.
saddler
Member +
will 5 liters fill the sump and oil fiter ??
Nick@TD.co.uk
Registered Trader <a href="http://www.TuningD
As long as your changing your oil every 3k miles or so it doesnt matter, i myself run 10w 40 morris semi synthetic and i dont have any problems, at the end of the day as many have said its up to you, but its better to use a cheaper oil and change more often than use a expensive one and leave in there for longer :gt-smilie:
