I have always thought that the Polyolefin oil, or derived from Natural gas or whatever is what true synthetic oil is. Such as Amsoil and Mobil 1. The castrol synthetic is just regular motor oil and does nothing for you.
BTW: I am not a chemist or a petroleum engineer. But I do have common sense and......With my own experiences have noticed the following:
1. Synthetic oil in motor and trans of old F-150 300CI 6 cylinder. easy starts in 0F weather and the manual trans shifted easier with synthetic in it.
2. Old boss swears by and sells Amsoil, he drove like a 8ick with his 1987 ranger truck. 220,000 miles on it when he got laid off in 2001, so I dont know how much more longer it went.
3. The pour point of synthetic is much lower, like -50f. I have seen with my own eyes dexron 2 transfluid in a gel state at -40f. (I am merely stating a fact) Not which synthetic is better.
4. I dont know how much hotter synthetic will get, I dont want to start a fire with a hot plate.
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Today's Featured Article - A Brief History of Tractors in Australia - by Bob Kavanagh. After Captain Cook's exploration of the east coast in 1770 the British Government decided to establish a penal colony in Australia. The first fleet arrived in 1788 and consisted mainly of convicts who were poorly equipped and new little of farming techniques. The colony remained far from self-supporting and it was not until the early 1800's that things started to improve. Free settlers started to arrive, they followed the explorers across the mountains and where land was suitable set up farms. T
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