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Reply to "API Mineral/Dino is not bad"

Define synthetic? According to the data, from Ashland and other oil companies, there are no issues with wear and GF-4 oils.

With GF-5/SN soon due out, these oils will approach synthetic quality. Many of the GF-4 products contain some Grp III base oils. Additives are also very important.

With GF-5, most oils will be considered synthetic by the Grp III definition. Shell recently came out with their new Synthetic called Pennzoil Ultra. It's primarily group III base, in which they claim Grp III's have been solvency than PAO's.

Conventional oils are all one needs unless your owners manual calls for a synthetic. If you are following OEM recommendations, you should have nothing to worry about.

In a high performance application, where high heat from a turbo or racing conditions are experienced, you maybe be better off using a synthetic oil like Mobil1/Synpower etc..

The new Mustangs will be going 10k miles or 1 year on Motorcraft oil. Toyota will be doing the same with their 0w20. Both of these oils are synthetic blends.

Amsoil is currently testing their GF-5 oils that will be out later this fall, along with the rest of them.

Oils have come a long way, and you can't go wrong with any of the major brands.

http://www.pqiamerica.com/

http://www.gf-5.com/

Using a qualified, officially approved, licensed product is your safest bet.
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