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To Synthetic or not to synthetic that is the question
Posted 03 October 2003 - 02:43 PM
I drive 28 miles each way to and from work about half freeway miles half stop and go. I tend to "visit" the red line about 4-6 times a day with the manual trans. I have been told its "good" to run synthetic oil on a smaller harder working engine.
I have a 2000 Miata with 24k and have ben running synthetic oil in with no problems as of yet but I guess it better not at 24 k miles.
Any thoughts for a first time Subaru owner would be appreciated.
2004 Subaru Forester Turbo
2000 Miata Miata SE
1995 Toyota Camry LE
Posted 03 October 2003 - 02:52 PM
I use Synthetic in my 89 OB only in the winter. When it hits -30° around here, regular oil turns to molasses. The synthetic stuff stays closer to it's normal,(ambiant), viscosity and the motor cranks over MUCH easier.
Other than that I see no advantage.
Posted 03 October 2003 - 03:08 PM
Posted 03 October 2003 - 04:11 PM
Lubricates well in spite of being dirty....oil changes theoretically required less often.
More stable and resistant to thermal breakdown.
Dirt and particulate still accumulate at the same rate....so really going 5000-8000 between changes may not be the best idea, but better with synthetic than dino.
Seals that are close to springing leaks with dino oil will definitely leak with synthetic (head gaskets?)....not and issue in a new car.
Im sure others can give more info.
Posted 03 October 2003 - 05:41 PM
Like most other people said wait till the car is broken in before running sythenthetic.
All my parants cars, and my car use sythentic, no problems at all, including oil leaks, and none of the cars are young, varing from my SVX at 120,000 miles to my dads 90 legacy at 330,000 miles.
Posted 04 October 2003 - 06:56 AM
Posted 05 October 2003 - 12:08 AM
In some cases cars can run a much smaller oil cooler with synthetics.
I'm running Dino in my stock Forester as I don't think a 2.5 is stressing much more than the head gaskets putting out this little power.
Posted 05 October 2003 - 05:54 AM
Posted 05 October 2003 - 08:37 AM
Posted 05 October 2003 - 08:46 AM
Posted 08 October 2003 - 05:40 PM
I say, replace the factory oil after 600miles/1000km - filter included! - and go straight for synthetic.
With a turbo Mobil 1 5W-50 or Castrol 10W-60 would probably keep the consumption down and lubrication up at high revs.
Synthetic IS better by far, but perhaps not all cars need the extra proctection or cold start reliability. And cost....
Posted 08 October 2003 - 11:04 PM
Posted 10 October 2003 - 07:22 PM
Originally posted by Setright
Engine break-in, if the honing is done right usually takes only the first few hundred revolutions.
That used to be true but modern engines have tighter tolerances and a different hone pattern.
When I built my harley, which used old fashioned iron jugs and old style rings, with a manual hone pattern, the break-in was done in 500 miles.
In modern engines the breakin takes 7500 miles or even more.
Posted 10 October 2003 - 10:20 PM
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