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dualsport89
Ray & Tom are exactly right based on all of the reading I've done to satisfy my own curiosity. My understanding that "back-in-the-day" there was an issue with some seals and the material that they were made from that allowed some oil leakage if oil was switched back and forth from synthetic to normal dino oil. Also true that most oils you would buy are synthetic blends or from a petroleum base stock. Oils that would have a true engineered "from-the-ground-up" molecular structure would be severely expensive. This is just my $.02 based on reading I've done to educate myself on motorcycle oils for my bikes.
JeepAlaska
I accidently did this with my jeep, and despite dire worries from my husband, my mechanic only recommended it changing it back to non-synthetic. It's been over a year and I don't see any real difference. I mean, 19 year old jeeps leak anyway - it leaked oil before and leaks at about the same rate now.
Spyder RTs
Dualsport89 I did the same and did some reading up on these lubricants. Then when I looked at the Synthetic summer blend for My CanAm Spyder RTs. It carrys very little info on viscosity weight or services codes. We are not getting good info on the concotions their mixing in these lubricants. And some mechanics are taking advantage of it. My dealer says I cannot use any other lubricant or it will damage the Tranny. Yuk Yuk his dome light is on.
SeroRose
nicest one
hannarussell
Let me share you this. Most experts now saw that the old 3,000 mile rule for oil changes is over-kill. However, none will reason that typical oil changes are still of the most important ways to keep your vehicle running for as long as possible. However, several people think they have to take it to a professional. In reality, it's a fairly simple job, and could be done a lot more inexpensively at home. Check this out: http://www.cardealexpert.com/news-information/the-expert-explains/changing-oil/. So, what's the bottom-line here? If you can manage to change oil by yourself, then do it. This is to shun passing of liability of the car to other people. The procedures are so simple, and I bet you can follow it. Since it is your automobile, I believe you'll be more careful when changing oils, thereby shunning incidence of oil switch.
geedavey
I mix my own blended oil because none of the oil companies specify the ratio of natural to synthetic oil in their blends, and I'll be damned if I'm going to spend more money without knowing what I'm getting. My blend is 50/50 and my car seems happy.