Quote:
Originally posted by v8Toilet
If you look at it from a pure cost perspective it's arguably not worth the money. Most of an engines wear occurs upon startup during those few seconds when the oil pressure hasn't built up yet and the engine is running. Synthetic oil is superior to regular petroleum oil in that it flows incredibly well at low temperatures.
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In truth switching to synthetic oil SAVES YOU MONEY. As well as time, all while protecting your engine better. The only caveat is that you have to use a brand that stands behind their product rather than wanting to rip you off...
AMSOIL was the first to recommend extended drains and to this day remains the company with the longest recommended drain interval in the market (up to 35K miles). Neo offers some extended drain products (up to 25K), and Redline (up to 18K). If you ever wondered why Mobil1 is less expensive, consider that they like to advertise meeting European specs that require the oil to perform better and provide an extended service life. In fact Exxon/Mobil supports an extended drain interval in Europe. So why don't they do so here? The only two possibilities are that they would much rather consumers drain good oil so they can increase sales, or that they actually distribute a lesser quality oil here and falsely advertise meeting the European spec. I surely doubt it's the latter since they sued Castrol for false advertising. But nonetheless it doesn't make me want to purchase their products.
Back to the point, if you follow the extended drain interval recommendations you will save money. We bought Toyota trucks because we knew they would last -- draining good oil early is like trading in your truck early, and if you plan to do that you could have paid less for another brand...
~ Fred