Engine Oil - BA XR8
I know this topic has been discussed several times before, however after browsing through the old threads I couldn't find the information I'm after.
It's nearly time for me to do my oil change. The manual specifies 10-30W but what does everyone use?
Ford use Castrol R which I think is 0-40W (same as the Mobil 1). I just went on the Castrol site and found that they have a 5-30W...that is the closest match to 10-30W that I could find from Castrol.
BP has a 10-30W GF-2
Mobile 1 has a 10-30W GF-3
The Penrite site recommends HPR5 which is a 5-40W.
My previous oil change at 3000kms I put in Shell Helix Ultra which is rated at 15-50W. I really want to keep it within spec this time round to see if there is any performance difference.
Has anyone tried any of the above?
PS. From what I've read...most ppl on here use Shell Helix Ultra(15-50W) and Mobile 1 (0-40W).... why go higher than 10-30W?
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