Hi Oil Gods, I plan to do an oil change in a month. Currently, my bmw n52b30 engine is running fuchs' 5w-40 full syn (oil from a 2nd-hand dealer workshop). The owner's manual said 0w30/40 and 5w30/40 are all acceptable. Therefore, I have been looking at two oils, 0w40 from either Castrol or Penrite since they seem to have a higher grade base stock (PAO).
Any recommendation between the two of them? Penrite has all the OEM spec like A40, MB229.5, LL-01..., but Castrol doesn't have LL-01
Penrite spec: https://penriteoil.com.au/assets/pis_pdfs/10 TENTHS PREMIUM 0W-40 (Full Synthetic) .pdf
also from Penrite's catalogue, it shows the zinc ppm (bottom)
Castrol spec: At the time making this post, the NZ castrol web is unresponsive, but in memory the oil is the API SN/CF A3/B4 spec, with 12.8 cSt@100C, and 5900 cST@40. VI is slightly lower than Penrite.
Any recommendation between the two of them? Penrite has all the OEM spec like A40, MB229.5, LL-01..., but Castrol doesn't have LL-01
Penrite spec: https://penriteoil.com.au/assets/pis_pdfs/10 TENTHS PREMIUM 0W-40 (Full Synthetic) .pdf
also from Penrite's catalogue, it shows the zinc ppm (bottom)
Castrol spec: At the time making this post, the NZ castrol web is unresponsive, but in memory the oil is the API SN/CF A3/B4 spec, with 12.8 cSt@100C, and 5900 cST@40. VI is slightly lower than Penrite.