Hello guys, oil change is coming up once again, currently have this oil (link below) https://www.ebay.co.uk/itm/171155296208 Cars now done just under 10k since rebuild, do I stick with the same oil or maybe go with a 10w 40 semi synthetic oil, Why I'm asking this question is because I see some people changing there oils after so many miles, and too many keyboard warriors making me paranoid. Thanks Pat