Join Date: Nov 2009
Location: Bedford UK
Santa Fe 2.2 CRTD CDX Auto (2007MY) Gone: Santa Fe 2.7 V6 CDX Auto
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I used to do preventive maintenance aand kept the records in a factory where we took oil samples every month and I sent them to a Mobil lab for testing. The Mobil engineer I worked with drove a Chevy pickup with Mobil 1 in the engine. He was doing an experiment (for his own information) where he only changed the filter and added back what was lost in the filter change... no complete change since the first time he changed oil at about 2K. Last I knew, he had over 100K on it. He pulled a sample and ran it through their lab when he changed the filter every 5K. At 100K, the oil still met new specs and looked fresh.
I don't know whether it was Mobil 1 or the Chevy that was good, but I'd bet on the Mobil 1... Chevies weren't that good in the early 2000s (I know, I move vehicles for a dealer and have driven about everything).
|I've used 10w30 mobil 1 since I bought it in 2003. 83k miles so far and I haven't had it in the service shop since I bought it other than a timing belt. For the last three years I've gone to the Extended Performance mobil 1 since I've only been changing it once a year(an average of around 12k miles per year).|
first I would consult the owners manual for the correct oil weight to use. The viscosity of 40w is way to much even in a hot climate plus
your gas mileage will suffer. Suggest a 5w20 or 5w-30;but stay within the range of the owners manual. I, personally find full or blended systhentic to not
be worth the extra money. Just make sure the oil you buy has the "star burst" symbol on the bottle - most synthetics do not - this means the oil
is certified by the API automotive engineers.
Note: I don't need any replies as to the pros and cons of fossile vs Synthetic oil, I really don't care. There is no one answer.
It's a personal choice only within the boudaries of the manufactuers oil requirements as spelled out in the owners manual.
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