I tow with my Nissan Xtrail -Australia(QRD25E motor). I use the 5w30 ILSAC GF5 oil, however, was told I should move up to 5w40 or 10w40. I don't know al ot about this, however, I thought 5w30 would be fine, as long as I change oil under "servere servicing(5,000km). Over the 5000km, i would tow my camper trailer for about 20% of that milage. Any thoughts?
Cheers msantos3b