The Battle of Viscosity 5W-40 vs 5W-30 – Whose Engine Oil Reigns Superior?

Both oils have the same cold temperature viscosity (5W), but 5W-40 oil has a slightly higher viscosity at operating temperatures compared ... 5w30 is thinner than 5w40 at 100c and 40c. 2. 0w30 has lower viscosity at 40c than 5w30 3. 0w40 has lower viscosity than 5w40 at 40c. The concensus is that most run a 5w30 (including myself) or 0w30 in the VQ40. Brands are kinda up in the air. Some choose Amsoil, M1, Pennzoil, Quakerstate, ... The "5W" in both indicates their winter (W) viscosity rating, showing they perform well in cold temperatures. However, the difference lies in ... I've done some reaserch and know that my Audi TT should be using 5-30W oil. ... and another. http://www.ebay.co.uk/itm/MANNOL-Audi-V ... The FlexSolar 40W features six panels that fold up quickly and easily. Credit: Sam Schild. Ultra Portable Solar Charger. Goal Zero Nomad 5. My indy recommended moving to 5w-40 as he said it helps with oil consumption on these cars and also that the slightly heavier weight will help reduce wear. Based on the viscosity grade, you can notice that 5w30 oil will be more liquid while the 5w40 is more viscous and thicker so that is why 5w30 ... According to the manual it is recommened for the best fuel economy, not that that is much of a concern as I would prefer protection over fuel ... Thought I would share my recent experience of switching engine oil to more viscous 5w40 from 5w30. Car is Fabia VRS 130 PD using 505.01 PD ...