> If you love spending loads of money on oil, sure, but there's absolutely no point.
I change my own oil on my vehicles. With synthetic oil and a new filter, it doesn't cost more than $75 USD per change, and you can take it lower if you get the oil on sale. Mineral oil, even cheaper.
> Oil change every 10k miles for new cars is more than enough.
For new cars, sure. I have used vehicles with > 100k on the odo; I tend to change my oil every 3-4k (so about 3-4 times per year). I could probably go longer between changes, but it would require me to have analysis run. If I'm feeling lazy, though, I know that I can safely get away with a new filter and top-up with a quart or so of oil.
> My last car had a recommended oil change every 18k miles, or every 12k during "heavy use". I had it changed at 10k and was told it was too early(based on the condition of the oil, not what the manual said).
You can't really tell what the condition of the oil is just from looking at it. To really know, you have to have it analyzed:
I change my own oil on my vehicles. With synthetic oil and a new filter, it doesn't cost more than $75 USD per change, and you can take it lower if you get the oil on sale. Mineral oil, even cheaper.
> Oil change every 10k miles for new cars is more than enough.
For new cars, sure. I have used vehicles with > 100k on the odo; I tend to change my oil every 3-4k (so about 3-4 times per year). I could probably go longer between changes, but it would require me to have analysis run. If I'm feeling lazy, though, I know that I can safely get away with a new filter and top-up with a quart or so of oil.
> My last car had a recommended oil change every 18k miles, or every 12k during "heavy use". I had it changed at 10k and was told it was too early(based on the condition of the oil, not what the manual said).
You can't really tell what the condition of the oil is just from looking at it. To really know, you have to have it analyzed:
http://www.blackstone-labs.com/