I don't feel like wasting the cash on synthetic in the Focus anymore. I've got about 46K miles on it, about 40K on synth. Is it going to fowl the sytem up if I swith to a conventional dino?
Can you switch from Synthetic to dino oil?
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after going back to ordinary oil dont switch back to synthetic that is what an oil man said one time
I'll try it out, monitor the results as best I can and see. Problem for me is that I'm going on an Uncle Sam sponsored tour of Korea for a year and being that I change my own oil I know that my wife will get taken to the cleaners on paying for a synthetic change every month. We have 46K on it now and I expect it will get another 40-50K on it while I'm gone. If all goes well I'll be jumping ship for the rumored to be released WRX STI by the time I get back (May 04').
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3,267 Posts
With today's oils unlike many of the parifin (sp)based oils years back, you shouldn't have any problems switching from one oil to another, especially if you have a good schedule that you follow regarding oil changes i.e. 3k, 5k etc.
The problem years ago was that non-synthetic oils had a tendacy to create build up over time and when you switched oils, either by brand, or to synthetic. The crud would soften and break loose thereby clogging up things like the oil pick up etc. But today's oil technology and the additives used don't lend themselves to build up as they used to.
I used to tear down engines with relatively low miles (less than 80k) on them that were on a good solid oil change schedule and the first thing I'd have to do is to vat the thing just to break up and wash off the crud buildup, but over the last several years I've torn down engines with high mileage (over 150k) that were on a poor or non-existant schedule and there wasn't any crud build up (to speak of), only a light film instesd of the 1/4" thick stuff of days gone by.
The problem years ago was that non-synthetic oils had a tendacy to create build up over time and when you switched oils, either by brand, or to synthetic. The crud would soften and break loose thereby clogging up things like the oil pick up etc. But today's oil technology and the additives used don't lend themselves to build up as they used to.
I used to tear down engines with relatively low miles (less than 80k) on them that were on a good solid oil change schedule and the first thing I'd have to do is to vat the thing just to break up and wash off the crud buildup, but over the last several years I've torn down engines with high mileage (over 150k) that were on a poor or non-existant schedule and there wasn't any crud build up (to speak of), only a light film instesd of the 1/4" thick stuff of days gone by.
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<blockquote><font size="1" face="Verdana, Arial">quote:</font><hr>Originally posted by lt7d101:
Just to toss in my .02, why not start using AmsOil? With the miles you are piling up their extended drain intervals may actually save you some money.<hr></blockquote>
Well not everybody has the hots for Amsoil, including me: Amsoil rant
Jon
Just to toss in my .02, why not start using AmsOil? With the miles you are piling up their extended drain intervals may actually save you some money.<hr></blockquote>
Well not everybody has the hots for Amsoil, including me: Amsoil rant
Jon
I had a bad deal with Amsoil when I first got the Focus. Ordered the 5W20 from them and about 45 days later I received a case of 10W30, had to send that back and wait for a refund. For me, if I can't run down to the store and pick something up off the shelf then I'm probably not into it.
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There are no issues on switching from synthetic back to conventional oils. SOP for your oil change.
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There are no worries in changing back and forth. The Syn oils are compatible with the Dino oils and the simple fact is you are changing your oil. That is the key to keeping your engine running!
I don't think I would run a blend. I would change out the old with the new and run just a short time (500 to 1000 miles) and change the new again. That should insure you are using one or the other. No real reason to do this, just for cheap insurance.
I don't think I would run a blend. I would change out the old with the new and run just a short time (500 to 1000 miles) and change the new again. That should insure you are using one or the other. No real reason to do this, just for cheap insurance.
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