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Old 12-13-2001, 12:34 AM   #1
malelee21
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Default How often do you change engine oil w/ synthetic oil?

I replaced mine at 7500 miles and now it's approaching 12500 miles. I've heard that upto 7500 miles on synthetic is ok. Anyone has any idea? My brother in law's BMW only require oil change every around 15000 miles.
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Old 12-13-2001, 02:54 AM   #2
sajohnson
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I stick to the SOA 'normal' interval of 7,500 miles. That way there are no warranty worries.
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Old 12-13-2001, 08:51 AM   #3
MrHorspwer
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To avoid warranty issues, I agree that sticking to the 7500 mile recommended intervals would be the wisest choice.
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Old 12-13-2001, 10:50 PM   #4
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I do it @6k and rotate the tires then also...low maintenence
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Old 12-14-2001, 12:41 AM   #5
Evaider
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Where are you reading 7500 miles for synthetic? I took mine to the dealer and had synth put in and the sticker they put on my window still says 3000 miles.

Oh, and why are we worried about warranties? Havnt just about all of us technically voided our warranties yet? With how SOA is about ***** changing the air filter practically voids the warranty.
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Old 12-14-2001, 03:08 AM   #6
chris d
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Default synthetic change

you should change at 3000mi everytime. the range of rpm this car has along w/ the turbo,,,,,,,,,,,whoes drivin this car w/ rpms under 3grand.not i. also the #1 reason all subies last so long is strict service...also never use FRAM oil filters
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Old 12-14-2001, 04:02 AM   #7
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No offense to chris d, but if SOA calls for the oil to be changed every 7,500 miles when using dino oil then 7,500 with synthetic should be no problem at all-in fact using synthetic is just extra insurance.

My previous vehicle (which I still own) is a Nissan NX2000. Nissan calls for oil changes every 7,500 miles also. I use synthetic oil in the Nissan as well. It has 185,000 hard miles and burns maybe a quart between oil changes and still runs great.

Unless a vehicle is operated under "severe" conditions (as defined in the owner's manual), changing oil every 3,000 miles is a waste of time and/or money.

PS: I always use Fram filters. No problems. This Fram bashing is getting old. The only OBJECTIVE test I've seen (in Consumer Reports) showed that Fram was a better more efficient filter. That's not to say that there aren't other good filters-just that Fram is pretty darn good.
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Old 12-14-2001, 06:38 PM   #8
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I read the same Consumer Reports article... over ten years ago! Fram doesn't make their own filters anymore (at least their cheap DuraGard that everyone uses). They're outsourced from a crappy low-end filter maker, and are nowhere near the quality that they used to be. The same report also said that Lee filters were #2, and that Lee Maxi's were on par with the Fram filters of that day. When was the last time you saw a Lee filter on the shelf? Fram built up their reputation by selling quality product years ago, then switched to a cheaper manufacturer and hoped no one would notice. I have no idea why some of you are so adamant about being brand-loyal when Fram is screwing you and laughing all the way to the bank.
Frams used to be good, but now they're crap. Period. But hey, it's your car. You guys can use whatever filters you want.
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Old 12-14-2001, 08:54 PM   #9
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I think I will go with a K&N oil filter. Their air filters are great and i'd expect the same from an oil filter.
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Old 12-14-2001, 11:44 PM   #10
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I change my oil when it looks ditry. Usually about 3K miles. Synthic oil or not they still get ditry so the more often the better.

PS: I only use Mobil 1
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Old 12-15-2001, 12:57 AM   #11
Richard L.
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Here is the service life for AMSOIL 100% Synthetic Motor Oil:
  • Personal passenger vehicles with gasoline engines: drain oil at 25,000-mile or one-year intervals, whichever comes first.
  • Turbocharged gasoline engines: drain oil at intervals up to three times as long as those recommended by the engine manufacturer or at six-month intervals, whichever comes first.
  • High performance and racing engines: Drain oil at engine manufacturer's recommended drain intervals.

Check out AMSOIL website for more info.

--
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Old 12-15-2001, 01:59 PM   #12
sajohnson
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Default Dirty Oil

tdman 77: Oil can look dirty and still be fine and it can appear clean and be spent.
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Old 12-17-2001, 12:07 AM   #13
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Default Every 3,000

I run Royal Purple and I still change it every 3,000 mi. I know that it is expensive but, it gives me a little peace of mind.
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Old 12-17-2001, 04:57 AM   #14
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Default Deez Peeplz Is Driving Me Crazy!

Subie Nut:

Man, if you want to spend too much for oil and change it too often that's your right. For everyone else, unless you are: racing, using your WRX as a taxi or delivery vehicle, running short trips that don't allow the engine to warm up, or otherwise abusing your car--save some time, hassle and money and just run any decent synthetic oil and change it every 7,500 miles.
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Old 12-17-2001, 02:01 PM   #15
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first, if you are running dino oil and change it every 7500 miles you are a fool.

if you are running synthetic and drive like a grandma, then I would say 5-6k is max on a turbo car. None of us on here drive the car like a grandma or at least I hope not.

if you drive it semi aggressive (normal driving but on the weekends or late at night you take it out and drive her hard and keep boost up) AND depending on what vecosity oil you are using anywhere from 3-4.5k max.

if you drive it hard. 3k max.

this is one of the hottest if not the hottest cars I've driven, not talking about looks here. have you guys checked out your oil temp during or after a hard run thru the twisties?

SOA can not void you warranty if you change your oil sooner than what they recommend, in fact that would be on your favor in a claim. SOA can not dictate the kind of oil you use and how hard you drive. Only you know that so change your oil accordingly.

For those who said that if you want to waste your money by changing your oil sooner than later, learn to change your oil. Don't pay $35 for the dealership to put in cheap Penzoil crap.

Makes me laugh that you buy a high performance turbo car, put premium in there and think it awesome and love it. then pinch on the oil.

Next time you are at the dealership, ask on the mechanics who really know these cars and either owns one or a high performance car, when you should change your oil. synthetic or dino.
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Old 12-17-2001, 06:07 PM   #16
rankink
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Exclamation When to put in synthetic oil for 1st time

Just wondering when you should put in synthetic oil for the first time. I am at about 1500 miles and thinking about doing soon. Does anyone have advice when and when not too?

Thanks,
Kolin
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Old 12-17-2001, 06:36 PM   #17
ryball
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I talked to a subaru tech and he said that the official word from subaru is that if you are going to change to synthetic, do it on the first oil change...
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Old 12-17-2001, 07:04 PM   #18
sajohnson
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I agree with ryball. You might as well get the synthetic in there ASAP--after a reasonable break-in period. The first recommended change is at 3,750 miles.

This is one of those Ford vs. Chevy questions though. Do a search and you will find opinions all over the map. From switch to synth. immediately to wait for 15-20,000 miles to let the engine break in fully.

Corvettes and Porches come from the factory with Mobil 1.

I switched to synthetic in my WRX at about 3,000 miles. I have 12,000 miles on it now with no problems. It doesn't seem to burn any oil at all, and I don't baby it!
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Old 12-17-2001, 10:50 PM   #19
rankink
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Smile snthetic oil change

Thanks Ryball and sajohnson. I will have facilities to make the change myself in a couple of weeks and will have about 2500 miles on it by then. So, I wanted to get opinions on when it has been done.

Kolin
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Old 12-19-2001, 06:38 PM   #20
jk147
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The oil should be changed frequently, especially with the wrx because of the turbo. Turbo cars usually generates a lot more heat than NA cars, hence the oil degrades faster.
If you change the oil every 3000 miles, it doesn't really matter if you use synthetic or dino. But dino oil degrades much faster after that, while synthetic can retain the oil density for awhile longer. I recommand an oil change every 3000 miles. .. because dirt particles also gets trapped in the oil, and it is bad for the engine. 7500 is a bit much, althrough Subaru recommands it.
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Old 12-20-2001, 07:36 PM   #21
ascott
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Quote:
Originally posted by jk147
The oil should be changed frequently, especially with the wrx because of the turbo. Turbo cars usually generates a lot more heat than NA cars, hence the oil degrades faster....
Small correction. Oil generall does not degrade, unless it's heated to the point of distillation and separates. It's the ADDITIVES in conventional oil that break down due to heat and time. These additives include detergents for cleaning, as well as the funny polymers that allow for dual-weight oils.

Synthentic does not have these additives. The properties of the oil (weight, heat resistance, etc.) are an integral part of the base.There aren't any additives to break down, that's why synthetic lasts longer.

However, for warranty and CYA purposes, I believe it would be unwise to exceed the manufacturer-recommended interval.
Cutting it short (the 1950s-era 3000 mile or three months deal) only wastes money. If you have money to waste, have at it.

There are instances where even I change oil more often then necessary. In my Grand National, I have a blowby problem. Just toodling around town, the car burns no oil. Four or five passes down the track, and the oil is so contaminated with gasoline from blowby that you could almost dump it into the tank and burn it as fuel. I always change my oil in the Buick after I've been to the track.

Use common sense, read up on the charactaristics of different oils, know your car, and make your own decision.
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Old 12-21-2001, 12:30 AM   #22
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I agree with ascott--good post!
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Old 12-21-2001, 02:13 AM   #23
chris d
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Default CHANGE IT !!!!!!!!!!!!!!!

if all of you want to risk wearing down your engine on a brand new 200 and 2 car w/ turbo by following S.O.A.s method than fine. personally i have payments for the next 5yrs. synthetic or not this piece of machine deserves tha best........thats why premium fuel is mandated.......thats why we all do mods to it........i said it before 3k--CHANGE THE OIL. it costs about $30 and you have piece of mind..if you dont trust me install a peak turbo timer, youll notice you have more boost w/ fresh blood than dirty. than again i am a nuebie?????
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Old 12-21-2001, 09:59 AM   #24
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You will not have more boost after an oil change. Just quicker spool up.

Roger
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Old 12-21-2001, 09:50 PM   #25
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Default oil?

You guys want a good answer when to change the oil in your car? Talk to Cobb Tuning. They tune the hell out of our cars all the time and know the demands that a heavily tuned car places on the oil. From SOA to Cobb, all I have heard has been 7500 miles synthetic or dino. In the end, it is up to all of you to change it when you choose, but not after 7500. Hell, change it after every 30 miles. It's your money.

stikboy:monkey:
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