Fuel system cleaners/additives, oil change intervals

[givemeslack]

You read your manuals, and I'll read mine. Thank you.

[mcrews]

you have to remember that in 1992, oil was not where it is today.
Are you using the same grade, type and quality of oil you used in 1992?
no.

[givemeslack]

Even with the best synthetic oil, I wouldn't go more than a year without changing it, as oil will oxidize, even if you're not putting on lots of miles.

I'd be surprised if any car's manual recommends you go more than a year without an oil change.

[Frank Lee]

Originally Posted by givemeslack

You read your manuals, and I'll read mine. Thank you.

Pretty sure nobody here has an Owner's Manual that specifies 3000 mile change intervals for normal usage. That makes your Owner's Manuals quite odd, don't you think?

[givemeslack]

Not at all.

[Frank Lee]

Me thinks you aren't being completely honest:

http://www.motorcraftservice.com/pub.../96expmg1e.pdf

[givemeslack]

I don't care what you think. Change your oil as often as you want, or don't change it. Push it to the maximum to save a little money.

Treat your motors any way you want.

I like my results just fine.

[Frank Lee]

Originally Posted by givemeslack

I wouldn't consider changing the oil according to the owner's manual recommendation to be excessive. In most cars and trucks that is at 3,000 miles.

Believe it or not, fuel injectors do get clogged. The least you can do is use a high quality gasoline that has detergent added.

Also, the reason for fuel additives is mainly to overcome the detrimental effects of ethanol which is added to gasoline, (10% where I live).

I won't go into greater detail right now, but you can do the research yourself.

As noted, I have done the research. You haven't.

[RandomFact314]

Originally Posted by Frank Lee

Pretty sure nobody here has an Owner's Manual that specifies 3000 mile change intervals for normal usage. That makes your Owner's Manuals quite odd, don't you think?

2005 Scion xA says every 5000 miles. Just got it changed today

[Flakbadger]

Cool thread, I like how it's not going anywhere.