Why is it needed to change the oil within the 1st 100 miles vs 3K

[jwight]

OK, that's my problem - I don't weigh enough!

[SmartDigger]

A friend said he would drive it with nonsinthetic oil for the first 1000 mile so the rings would set. then go back to the synthetic. He said they do that with the harley's

[Old smart]

Originally Posted by SmartDigger

A friend said he would drive it with nonsinthetic oil for the first 1000 mile so the rings would set. then go back to the synthetic. He said they do that with the harley's

I would do that too (have done that with expensive race-prepped engines), but 500 miles is enough. Thence, on to full synthetic and the best filters.

[bottlerocket]

Originally Posted by SmartDigger

A friend said he would drive it with nonsinthetic oil for the first 1000 mile so the rings would set. then go back to the synthetic. He said they do that with the harley's

HArleys run on synthetic now?? Wow, I would think they'd leak like a sieve if they did....

[Fredvon4]

bottle rocket... the Harley EVO aluminum motor solved that problem... my 93 80 cubic inch V twin is 127,000 miles old and never a drop to "mark it's spot"

Yes we use conventional oil (dino) to properly break in the rings because full synthetic has way too high a shear strength to let the low tension rings used these days to ever fully seat.....

There are a LOT of doubters.... and they would be the same folks who fail to read on Royal Purple, Lucas, and other full synth web sites the recommendations to use dino first.....

So do not take Old Smart and Fred's word on it, do some simple research and decide for your self

OR be the typical owner... drive it as is.. and sell it in Two~three years for a new car

[Dunerunner]

Originally Posted by Fredvon4

Yes we use conventional oil (dino) to properly break in the rings because full synthetic has way too high a shear strength to let the low tension rings used these days to ever fully seat.....

There are a LOT of doubters.... and they would be the same folks who fail to read on Royal Purple, Lucas, and other full synth web sites the recommendations to use dino first.....

So Fred, I have 810 mi in the smart, changed out the synth at 410 and replaced the filter. Should I wait 500 and change to dino, break-in, then return to the synth? Or just have another beer and not worry about break-in. I will probably have the smart 8 - 10 years unless the thing viscerates itself before then.

[Fredvon4]

Dunerunner Have the beer... the dino break in needed to be done in first 20~25 hours of operation

you are well on the way to normal break in and probably won't see any real benefit from a dino run now

BUT...If you are serious about 8~10 years ** high mileage life** you might consider 30W conventional right now for a week of fairly hard running then right back to your favorite full synth....... full operating temp,...... and series of hard accelerations through the gears every driving cycle
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Break break...
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Have we figured out what lube goes in the tranny yet...?

If the reports of trash and crud in the motor oil are an indication... those of us who are real anal need to consider getting the initial lube out of the tranny early ... no filters in that system that I can see... cold thicker oil in a tranny will circulate the crap into the sleeves and bearings....

[Dunerunner]

Thanks Fred...The dealer's sales rep advised I change the transmission fluid too and before the 1000 mi. mark. He suggested I put in the most expensive fluid I could find. I took that to mean the best I could find.

BTW-The beer was very refreshing. Thanks!

[chieftmc]

Originally Posted by Fredvon4

...
**********************
Break break...
**********************
Have we figured out what lube goes in the tranny yet...?

If the reports of trash and crud in the motor oil are an indication... those of us who are real anal need to consider getting the initial lube out of the tranny early ... no filters in that system that I can see... cold thicker oil in a tranny will circulate the crap into the sleeves and bearings....

Do we have any answers yet? I don't even have my car yet and would definitely like to know this one and the procedure. Can I assume it is the same as other manual trannies

Of course, we ALL know what ASSUME does!!!!!!!!!!

[Old smart]

This is for a 450, but it may be the same for a 451: http://www.evilution.co.uk/index.php...154&men=Engine .

Perhaps Kane can comment.