Hey, looking for options for my 2003 Land Rover Defender Td5. I recently imported this from the UK to Canada when I moved here (owned it 15 years).
By the book it specs 5w30 A1/B1 oil, although other viscosities are acceptable, 5w40 is shown as having the same ambient temp ratings.
Is there a reason to stick to a A1/B1 oil? It seems options of this are far more limited over here in N America. Is there any harm in going for a 5w40 HDEO like Rotella? Although being similar to a VW PD engine as it has unit injectors, I have seen very very few almost non-existant reports of Td5s actually suffering from any meaningful wear, they usually die from other means like cracked heads filling the sump with diesel.
I've tried and failed to understand the ACEA ratings. Is there a reason A1/B1 would be specced over something like A3/B4 which on paper seems to be more stout with a higher HTHS?
Any other recommendations?
By the book it specs 5w30 A1/B1 oil, although other viscosities are acceptable, 5w40 is shown as having the same ambient temp ratings.
Is there a reason to stick to a A1/B1 oil? It seems options of this are far more limited over here in N America. Is there any harm in going for a 5w40 HDEO like Rotella? Although being similar to a VW PD engine as it has unit injectors, I have seen very very few almost non-existant reports of Td5s actually suffering from any meaningful wear, they usually die from other means like cracked heads filling the sump with diesel.
I've tried and failed to understand the ACEA ratings. Is there a reason A1/B1 would be specced over something like A3/B4 which on paper seems to be more stout with a higher HTHS?
Any other recommendations?