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Old 11-29-2005, 04:38 PM   #1
sndc5
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Default switching to synthetic

when you switch to synthetic oil do you just change your oil as you would regularly or is there a different process
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Old 11-29-2005, 04:50 PM   #2
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Unabomber's Oil FAQ

That should help you. I switched to synthetic my first oil change, just like a regular oil change.
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Old 11-29-2005, 05:10 PM   #3
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id do one dino 5w30 change on ur car at 1500...wait till 4000, then change to Mobil1 5w40 syn..or any other syn at that weight..they are all good
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Old 11-30-2005, 10:49 PM   #4
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i switched to mobil 1 5w-30 on my first oil change yesterday
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Old 11-30-2005, 11:58 PM   #5
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just change it like any other oil.
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Old 12-01-2005, 01:13 AM   #6
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the 'local race shop' suggested not going with full synth for 8k miles. I just got that, and when I did the change I made it a double to get rid of the 'leftover.' Basically, you do a regular full oil change, with the synthetic oil and a cheapo (but new) filter. Let the engine run for a couple minutes. Then do another complete oil change with new synthetic and a new quality filter.

I do double changes every third or so one anyway...its prolly a bit excessive, but it makes me feel better.

On my old WRX I used mobil 1 full synth 5w30...don't recommend it. It was an EXCELLENT oil new, but it sheared out noticably within 2000 miles. I don't know if that was due to the weight, the 'ingredients,' or both. I always let it warm up before getting on it and always allowed at least a minute cool down.
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Old 12-01-2005, 07:45 AM   #7
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Quote:
Originally Posted by shemoves
I do double changes every third or so one anyway...its prolly a bit excessive
I agree with the excessive part...

Anyway - to keep costs down a little, you probably don't need to completely fill the engine - 3 qts (which should be a bit under the dipstick) should allow you to circulate clean oil.

However - unless your oil had so much crud in it that it clogged the filter and was going through the bypass, you really aren't doing much by running clean oil through the system then draining it (other than spending an extra $20-25)
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Old 12-01-2005, 12:36 PM   #8
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Quote:
Originally Posted by shemoves
the 'local race shop' suggested not going with full synth for 8k miles.

....most excellent advice.
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Old 12-05-2005, 09:49 PM   #9
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Quote:
Originally Posted by Uncle Scotty
....most excellent advice.

Yes, your engine is not broken in at 3k miles, period. Swithcing to synthetic that early, IMO, will cause oil consumption problems later on down the line, as you are not giving valve seals, rings, etc. enough time to roperly seat/break in.

I'm running dino Castrol GTX 5W-30. My car has about 15k on it. I changed the first oil change at 1500, adn thank god I did, afterwards, I wished I would've done it at 1000. That oil felt rediculously digusting. Very thin, gritty, as if it had sand in it adn was 25k miles old. I will switch to synthetic at about 20k miles. Probably a lil later than I need to, but, better for my peace of mind that the engine is completely broken in.
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Old 12-06-2005, 12:00 AM   #10
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Just like a normal oil change and make sure you get a good filter that will last through extended time between changes if you plan to take full advantage of the synthetic oil. I ran Mobil 1 in my 98 RS and now run the same stuff in my '02 WRX. I talked to Mobil about how often I should change it and they said I could go to 7,500 miles even in the crap weather we have here. I change it every 5,000 when I rotate the tires.
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Old 12-06-2005, 03:34 PM   #11
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Quote:
Originally Posted by kendogg41
Yes, your engine is not broken in at 3k miles, period. Swithcing to synthetic that early, IMO, will cause oil consumption problems later on down the line, as you are not giving valve seals, rings, etc. enough time to roperly seat/break in.

I'm running dino Castrol GTX 5W-30. My car has about 15k on it. I changed the first oil change at 1500, adn thank god I did, afterwards, I wished I would've done it at 1000. That oil felt rediculously digusting. Very thin, gritty, as if it had sand in it adn was 25k miles old. I will switch to synthetic at about 20k miles. Probably a lil later than I need to, but, better for my peace of mind that the engine is completely broken in.
Wha??? You engine is broken in by the time you get it from the dealership. The honing marks might still be there until 1K but it has nothing to do with being "broken in..."
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Old 12-06-2005, 03:49 PM   #12
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Ruh Roh!
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Old 12-06-2005, 04:03 PM   #13
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Quote:
Originally Posted by 2fas4u
Wha??? You engine is broken in by the time you get it from the dealership. The honing marks might still be there until 1K but it has nothing to do with being "broken in..."

....uuuummmm....NO....just NO....as in NOT.

NO. Really NOT.





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Old 12-07-2005, 07:13 PM   #14
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i think the engine being broken in depends on which engine builder you speak with.

some say, straight from the factory, some say maybe 1k down the road or less.

i drove my old 96 accord new off the lot and put 165k on it. drove it hard from mile 4 and never had an issue with it.

my friend drives an 02 m3. bought it new from the dealer and has been driving it hard since mile 10 or so. and they stressfully say at bmw to break the car in the first 5k i believe. even had warning signs/stickers everywhere.

i'm at about 19.5k on my 04 sti and will be switching to synthetic on the next change. not really for performance, but so i can wait longer between oil change intervals.
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Old 12-07-2005, 07:15 PM   #15
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btw, you guys should check out honda-tech.com on some full write ups about different synthetic oils on the markets and their ingredients.

a bunch of honda challenge guys are on the site and research this stuff religiously. i remember, there was some sort of change in the ingredients of mobil 1 about 1.5 years ago or so.

you can look up george knighton, veteran guy on the boards there and honda challenge driver.
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Old 12-07-2005, 10:10 PM   #16
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Quote:
Originally Posted by bgod
some say, straight from the factory, some say maybe 1k down the road or less.

....and those would be wrong....100% wrong.

There is a good deal of debate on this, MOST of it by people that don't really understand what is involved in the operation of an internal combustion engine anyway
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Old 12-07-2005, 11:42 PM   #17
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trust me, every engine builder out there has their own theory. is anyone ever 100% correct, don't think so.

there is always this same debate on every public web forum for every type of enthusiast regarding break in procedures, etc. and every guy on each forum that claims to know someone or have a wealth of knowledge all differ in oprinions. it's no different here.


if there was one universally adopted method, this wouldn't even be an issue.
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Old 12-08-2005, 12:22 AM   #18
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Quote:
Originally Posted by bgod
trust me, every engine builder out there has their own theory. is anyone ever 100% correct, don't think so.

there is always this same debate on every public web forum for every type of enthusiast regarding break in procedures, etc. and every guy on each forum that claims to know someone or have a wealth of knowledge all differ in oprinions. it's no different here.


if there was one universally adopted method, this wouldn't even be an issue.


....see my above post.

There is no way on this earth than you can fully 'break in' an automotive internal combustion engine in such a short period of time....not enough heat cycles, for one thing.....and there is a great deal of stupidity in the world that flourishes on this fact.

I do not subscribe to such stupidity, nor am I swayed by it.


....and what flourishes on 'other boards' usually doesn't, here.
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Old 12-08-2005, 01:33 AM   #19
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i'm not here to really argue with you. i'm just stating what goes on in the real world, not just these forums. whether here or somewhere else.

just as you're devoted to your own knowledge so are other's of their own. stupidity or not, the next guy is always wrong if you get what i mean.
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Old 12-08-2005, 08:14 AM   #20
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Quote:
Originally Posted by bgod
btw, you guys should check out honda-tech.com on some full write ups about different synthetic oils on the markets and their ingredients.

a bunch of honda challenge guys are on the site and research this stuff religiously. i remember, there was some sort of change in the ingredients of mobil 1 about 1.5 years ago or so.

you can look up george knighton, veteran guy on the boards there and honda challenge driver.
A better choice for accurate oil information is Bob is the Oil Guy (BITOG):

http://theoildrop.server101.com/cgi/ultimatebb.cgi
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Old 12-08-2005, 08:38 AM   #21
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I received a letter from Subaru indicating that a synthetic oil change should not be done until you hit 1000 miles. Anytime after that is fine. A lot of cars come from the factory with it now.
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Old 12-08-2005, 04:48 PM   #22
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Quote:
Originally Posted by Corkfish
I received a letter from Subaru indicating that a synthetic oil change should not be done until you hit 1000 miles. Anytime after that is fine. A lot of cars come from the factory with it now.
....and THAT is another 100% COMPLETELY different issue that is 100% NOT RELATED to cars that do NOT come factory equiped with syn oil.....
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Old 12-09-2005, 10:39 AM   #23
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Quote:
Originally Posted by Uncle Scotty
....and THAT is another 100% COMPLETELY different issue that is 100% NOT RELATED to cars that do NOT come factory equiped with syn oil.....
Oh really? You are so completely sure your opinion is correct and others are incorrect.

Do tell: exactly what is different about the internal combustion engines that come with say M1 from the factory vs those that don't? 100% differnet? So those engines with M1 operate 100% differnetly then those that come with dino juice? Do tell!

BMW, Chevy, Mitsu, Porsche to name a few make good tight engines just
the same as Honda, Toyota and Subaru.

Change your oil and filter early to rid yourself of the *trace* amounts of metal from initial engine operation. Put whatever you want in there provided it meets the viscocity and lubrication properties specified by the MFG.

Lets all try to stop using works that project absolute certainty (e.g. if you do this it WILL cause oil consumption, ALWAYS, and NEVER, etc...)

My own personal experiences show two well made cars that did not consume any oil after early M1 switches. Take that for what its worth.

- b
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Old 12-09-2005, 11:00 AM   #24
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Oh the urban legends and myths about oil and oil changes. What do they say about opinions?
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Old 12-09-2005, 11:15 AM   #25
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Well I switched to synthetic in my WRX (04) from the first oil change on...not a single problem over 10,000 miles. I did the same thing on my STi (05) and have not had a single issue for 9500 miles thus far. Conks .02.

Changing the oil is the same regardless if dino/syn.
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