My manual recomment me use 5w/30 on my mustang gt. Its had 130k miles and Im really happy with pennzoils 10w/30 with lucas oils, but in the morning when I start it up, it make a click sound like, lift tick for about 20 second, then it go away. I dont like to go back 5w/30 because 10w/30 is work the best for me, less oils burn and no smoke ( I have valve seal problem ), should I stay with 10w/30 with lucas or go with 5w/30 with lucas for better flow for winter ?
Or stay with what work ?
Or stay with what work ?
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