i like to do my own oil changes just baught this 08 cobalt ..i think dealer was using mobil reg oil...now i have some left over quarts of valvoline max life synthetic blend 5w30 that i used on my other older higher miles car...
my cobalt only has 21000 miles ive heard stories that you should only use any synthetic oil when you have higher mileage...so any experts out there know what i should do...like buy some reg 5w30 oil not being synthetic for now or is it all ok to use the synthetic blend... ive heard that the synthetic is way more durable but things mite not seal as good when lower mileage and not completely brokin in yet... thanks any info will help me decide..
my cobalt only has 21000 miles ive heard stories that you should only use any synthetic oil when you have higher mileage...so any experts out there know what i should do...like buy some reg 5w30 oil not being synthetic for now or is it all ok to use the synthetic blend... ive heard that the synthetic is way more durable but things mite not seal as good when lower mileage and not completely brokin in yet... thanks any info will help me decide..