Hello all, new guy here. We just purchased a 2015 BMW x5 35d. BMW gives free oil changes every 10k miles and they use the Castrol Professional OE 5w-30 (a LL04 oil). I'm of the old school that puts more stock in heavier oils and since the diesel is tougher on oil, add to that the turbo being also tougher on oil, I feel the need for a heavier weight oil. Gas mileage takes a backseat to a healthy engine.
Since its under warranty, and I dont feel confident using a 5w-30 every 10k, I plan to change the oil every 5k miles using BMW's castrol Pro OE and let BMW do it at their 10k intervals.
My question is, after the warranty expires, would the Pentosin HP II 5w-40 be a good oil to use every 10k miles? I searched the forums but did not find any oil analysis tests using such an oil with the 35d. I feel the heavier oil will provide better protection than the Castrol OE. Am I wrong to assume this?
By the way, I chose Pentosin since its a LL04 oil which heavier
Since its under warranty, and I dont feel confident using a 5w-30 every 10k, I plan to change the oil every 5k miles using BMW's castrol Pro OE and let BMW do it at their 10k intervals.
My question is, after the warranty expires, would the Pentosin HP II 5w-40 be a good oil to use every 10k miles? I searched the forums but did not find any oil analysis tests using such an oil with the 35d. I feel the heavier oil will provide better protection than the Castrol OE. Am I wrong to assume this?
By the way, I chose Pentosin since its a LL04 oil which heavier