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Originally Posted by Gilda
Thanks. It isn't an issue with my car, because the car's computer says when it needs an oil change, but I did wonder about why the time would matter. Thank you for explaining.
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The computer gives you a reasonable estimate of when your car is likely to need an oil change. It's not even close to an exact science.
For a presentation on the difference between regular and synthetic oils, go to
www.pennzoilplatinum.com
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Originally Posted by shakran
So yes, synthetic is much better than conventional oil. BUT:
Do we really need it in daily driving cars. I think this is the point where Mr. SD and I will diverge in opinion, but I don't think so.
Sure synthetic is a lot better at lubricating, but regular oil lubricates just fine. I'd compare it to replacing your lawn mower with a 5 foot wide professional ride-on mower. Sure the pro mower will bring more to the job, but it's not necessary.
On a pure cost-benefit analysis, regular oil wins hands down. And, again using my honda as an example, I've got over a quarter million miles on the thing, and it's never seen a drop of synthetic in its life.
All that said, and I know this doesn't apply to you Gilda, but it might for others - if you've been running your car on regular oil for a long time and then you switch to synthetic, you might discover that you have oil leaks. Buyer beware  |
Yep, we're goin gto disagree. Synthetic oils use superior additive packages that will keep the engine cleaner and prevent sludging much more reliably than conventional oils. The part about leaks is definitely true, since even 20w50 synthetic oil will flow as freely as 5w20 conventional.
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Originally Posted by Smoky
I took my brand new truck to a quick lube place and watched (quite unsurprised) as the tech came into the waiting room to show me the "clogged up" air filter. I asked him if it was typical for an air filter to go bad in 6000 miles and he just shrugged. I then showed him the air flow indicator in the engine, had him put back the "clogged" filter and showed him that it was flowing with no resistance.
His comment after I totally destroyed him? "Well, it LOOKS dirty."
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If that's a Vortech under your hood, the airflow meter is completely worthless. On a similar note, something like a K&N is entirely unneccesary since only very high displacement or heavily boosted engines are going to come anywhere near the flow capacity of the air filter.