Empowering Engine Performance 5W-40 vs 5W-30 – Unraveling the Oil Viscosity Mystery

5W-40 oil stays thicker at high temperatures than 5W-30. If you live in a place with a particularly hot climate (Arizona, for example) using 5W- ... 5W40 is thicker at higher temperatures and remains more stable than 5W30 in hot weather conditions. While both oil types resist breakdown in ... 5w30w is just a better oil runs especially for better fuel consumption... only time you'd jump to 5w40 is when the car is getting older and high ... In other words, a lubricant with SAE 5W-30 will behave better when cold than a lubricant with SAE 10W-40. In contrast, oils with a higher SAE ... TRIPLE QX SynPlus 5W-30 Engine Oil FS GM not Low SAPS- 1Ltr Best Seller. TRIPLE QX SynPlus 5W-30 Engine Oil FS GM not Low SAPS- 1LtrProduct Code: 521776042. The FlexSolar 40W features six panels that fold up quickly and easily. Credit: Sam Schild. Ultra Portable Solar Charger. Goal Zero Nomad 5. Any major brand of synthetic oil that covers the "30" viscosity rating, such as 0W30, 0W40, 5W30 etc. will work in your car. Nothing really. Your oil will act like a 40 weight oil at a high temperature. You may lose 1/4 mpg in fuel efficiency, not much else. A4 (B6 Platform) Discussion - 5W-30 or 5W-40??? Quick answer please..(m) - The owner's manual said The engine oil which was first put into ... Comments69 · Will Thinner Oils Damage Your Engine? · Why I switched from 5w40 to 0w30 in my 340i · Ditching 0W-20 Oil In The 22 WRX · 20W-50 vs 5W- ...