46TheDoctor said:5w-30 you need dude, and why is your motor a whip?
The differnce? Viscosity as explained here.evo2audi said:I lived in the US for years. All the rappers called there rides whips. Since I am a famous rapper I should too. I know it's 5-30w but really whats the difference ? It is a Castrol fully synthetic after all. My best friend is a mechanic and he says I/car won't know the difference.
You wont notice the difference but your engine will.evo2audi said:It is a Castrol fully synthetic after all. My best friend is a mechanic and he says I/car won't know the difference.
james0808 said:You wont notice the difference but your engine will.
The viscosity of the oil,the 30 grade will flow around the engine faster than a 40 grade as its thinner.evo2audi said:How exactly ?
james0808 said:The viscosity of the oil,the 30 grade will flow around the engine faster than a 40 grade as its thinner.
Much better for your engine.
Tendaimwari said:That statement about 30 being better than 40 is only accurate if you cover a lot of miles. If your journeys are relatively short or your annual mileage is low then a 5W-40 is better suited than a 5W-30.
Marko said:One oil isn't better than the other. Synthetic oils are preferred by dealers to maximise drain intervals and help improve fuel consumption. That's very optimistic.
Thats weird because they both have the same cold(start up)viscosity 5w?Marko said:I used to have a lot more rattling at startup with the 5w30 than I do now. I use the 5w40 purely because of my fixed drain intervals.
Marko said:One oil isn't better than the other. Synthetic oils are preferred by dealers to maximise drain intervals and help improve fuel consumption. That's very optimistic. I've used Millers 5w40 XFE-PD for years and have little oil use. I drain every 6 months with a new filter.
I used to have a lot more rattling at startup with the 5w30 than I do now. I use the 5w40 purely because of my fixed drain intervals.
enda1 said:How exactly. If you only cover short distances then your engine will never warm up properly. A 30 grade oil will have a lower viscosity and will pump/flow easier than a 40 grade oil whilst the engine is warming up. therefore oil flow to areas such as the cam shaft etc will be better with a 30 grade oil. A lower viscosity oil will also flow better into the tight clearances in bearings etc so lubricating them better.
Tendaimwari said:That statement about 30 being better than 40 is only accurate if you cover a lot of miles. If your journeys are relatively short or your annual mileage is low then a 5W-40 is better suited than a 5W-30.
james0808 said:Annual mileage has nothing to do with it.
30 will flow better than a 40 as soon as normal operating temperature is reached.
Tendaimwari said:OK not looking to into any arguments over this. But some food for thoughtr.
If annual milkeage has nothing to do whether a 30 or 40 oil is used. Why does Fixed (40), low mileage intervals, and AVS (30), high mileage intervals, services use different types of oil?
james0808 said:Could it be that the 30 is a much better synthetic oil so doesnt break down as quick?
You say slow short journeys like an engine doesnt get warm when going slow,it does.Tendaimwari said:Ah the Magic Word synthetic. The important thing with engine oils is the shear stability; the much hyped synthetic or mineral nonsense is a red herring. Sexy marketing speak. The type of oil that is likely to give trouble after low mileage is a light viscosity, your beloved 30, type with poor shear stability, either mineral or modified mineral based.
It is really important to change oil regularly if the engine covers a low annual mileage made up of slow, short run. This is being cruel to the oil and the engine! The oil, regardless of its quality, gets full of fuel and water vapour, and never gets the chance to evaporate it all off with a long fast run. This is even more with "thinner" oils. The consequences are corrosion, ring and bore wear. It is essential to do a change at least once a year, even if the recommended mileage hasnt been covered.
Give Guy at Opie oils a ring and he can explain the differences between oil even further.
james0808 said:You say slow short journeys like an engine doesnt get warm when going slow,it does.
So do you think a mineral will outlast a fully synthetic oil?
It is really important to change oil regular if you do low or galactic miles.
Tendaimwari said:Not suprised you could not be bothered to read it because you obviously know it all.
Try calling Opie oils and ask them what oil they would recommend for a 2004 S4 that does less than 10K miles per year.
Thats what I did and they confirmed that a 5W-40 oil is more than good enough. And that is what my "whip" runs on.
Tendaimwari said:Try calling Opie oils and ask them what oil they would recommend for a 2004 S4 that does less than 10K miles per year.
Tendaimwari said:Not suprised you could not be bothered to read it because you obviously know it all.
Try calling Opie oils and ask them what oil they would recommend for a 2004 S4 that does less than 10K miles per year.
Thats what I did and they confirmed that a 5W-40 oil is more than good enough. And that is what my "whip" runs on.
Marko said:I have to agree with Tendaimwari. It's in the Audi owners book that 5w40 505.01 is perfectly fine for my car. I'd be more concerned running a 5w30 so called longlife oil in an engine for 2 years... No chance! When I got my car the service was due, previous was two years prior from Audi. I took the oil filter out and it crumbled in my hands. We can argue for ever about the durability of longlife oils, but filters sure don't last.
james0808 said:Wow,ive never seen an oil filter crumble and ive changed loads.
Most people on here will not leave their cars for 2 years before changing the oil and obvisously the filter.
james0808 said:Wow,ive never seen an oil filter crumble and ive changed loads.
Most people on here will not leave their cars for 2 years before changing the oil and obvisously the filter.
Yes,as long as its not still under Audi warranty.Tendaimwari said:Are you sure?
If it makes you happy.Tendaimwari said:Shall we have a poll?
No and i have no intention to with their rip off prices.Are you on commission or what?Tendaimwari said:Did you call Guy?
Marko said:What ever oil you prefer, regular oil and filter changing is a must!! I'm sure many won't argue with that.