5w30 vs. 5w40 A Comparative Guide for Optimal Engine Performance

Quality engine oil formulated for your vehicle at Repco. Your local Repco stocks a 5w30 or any other grade of engine oil from Castrol, Penrite, ... We work side-by-side with workshops to produce high quality engine oils, lubricants and chemicals for passenger cars and commercial vehicles. It's best to go with a 0/5W40 since the oil is lubricating the turbo regardless of one's driving style. You'll also feel the performance difference in hot ... 5w40 offers thicker, high-temperature protection for hot areas, while 5w30 flows better for colder climates and improves fuel mileage. For high mileage engines, ... I don't know any tuners out there, or even my tuner. Y'all wanna chime in and help me? I'm getting killed out here. And we switch on 0 W 20 to ... This synthetic oil is best for your engine and is better for your engine giving you more miles in between oil changes. It does cost higher that any regular ... Generally speaking a 5w-40 is more expensive oil than a 5w-30 as it has to not thin out at the higher end of the temp. ranges. Personally I run ... 5w40 is thicker/more viscous, and only when warm. So 5w40 is worse fuel economy etc. It's not a huge difference though. ... or diagnostic device necessary. There's even a conference room for ... The X7 5W30 I've seen it sold for nearly half the RRP listed price. I believe 5W-40 would actually be better! It might increase fuel consumption slightly, but I don't see any other issues with using it.