Unlocking Engine Performance 5w30 vs. 5w40 - The Essential Comparison

5W-40 is as thick as single grade 40 weight at 100°C, and will pump down to -30°C (at least right after oil change). Even using a heavy duty diesel oil, ie Mobil 1 Turbo Diesel Truck 5w40 (or for slightly less money, Shell Rotella T-synthetic 5w-40) will be ... 5W-30 · 10W-30 · 10W-40 · 15W-40 · All viscosities · By Fuel Type · Petrol / E10 ... or more vehicles or applications. 4. By Cross Reference (Non-Penrite brand to ... The 5 is the same. The 40 is higher viscosity at operating temps, compared to 30. The engine was designed for 5w30. Either is fine. The important bit is the LL01 or LL04. LL04 is mandatory for diesels with DPF filters, LL01 is fine for everything else ... 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- ... Audi A5 / S5 / RS5 (B9) - 5w30 vs 5w40 - So I have been using Castrol edge 5w40 in my 2018 A5 since birth (75k). Seems this oil is becoming ... Wondering if you can use 5W30 and 5W40 oils together? Watch this video to learn whether mixing these two oil grades is safe for your engine. Member ... MSMS3 said: ... Ultimately, any full synthetic in either 5W-30 or 5W-40 that is fully API certified for today's criteria will work fine ... MILLERS EE PERFORMANCE C3 5W30 5L, MILLERS EE PERFORMANCE C3 5W40 5L, MILLERS EE PERFORMANCE ECO 5W30 5L, MILLERS OILS XF PREMIUM C3 VW 5W30 ...