Forster Bittner
Member
I'm considering a Mazdaspeed 3, and I'm curious as to what the Owner's Manual recommends for the oil change intervals.
Thanks.
Thanks.
Foolish said:I think you just change it whenever the motor falls out.
gr? said:One thing I do is send out my oil for analysis, which gives a good snapshot of the condition of the engine (wear & tear, leaks, over-used oil, under-used oil). I started out with Mobil 1 synthetic and was able to get about 5000 miles before it started showing excessive signs of thermal viscosity break down. I switched to Amsoil my tests were showing the oil was fine at 7500 miles, but I was at the one year interval so I always changed out the OEM filter and oil even though the oil was ok for more miles. One note - the mileage includes fairly harsh conditions from drag racing and autocrossing. For street use only, I probably could've gotten another 10-15% out of the oil.
Any way, the old rule of 3 months/3000 miles is dated years ago when oil technology was fairly basic. Engines are built to much tighter tolerances and oil technology is more advanced, so oil intervals can go much longer. How much? It really depends on the driving conditions of the vehicle.
The independent oil tests are worth the $20 to give you a rough idea what condition your oil is in. With all the tests I've done over the last 7 years, I know I can go 1 year / 7500 miles with my Amsoil 10w-30.
gr? said:Any way, the old rule of 3 months/3000 miles is dated years ago when oil technology was fairly basic. Engines are built to much tighter tolerances and oil technology is more advanced, so oil intervals can go much longer. How much? It really depends on the driving conditions of the vehicle.
...and anyone else who stands to make money off of you by changing your oil more often than necessary! I love how the manufacturer puts it in your manual that you should change it every 7,500 or 5,000 or whatever, and the dealer still tells you to bring it in every 3,000 so they can change it for you! If you point out the manufacturer's schedule, the dealer will just blow it off!pmeilakjr said:The 3 month or 3,000 mile is also a marketing campain from Jiffy Lube.
pmeilakjr said:For schedule 1, the manual says 6 months or 7,500 miles, 4 months or 5,000 miles for schedule 2. If you live in Puerto Rico it is 3,000 miles. Attached are a few sections of the online 2007 owners manual, the only diference is that the newer printed manual states 5w-30 weight oil for the turbo car.
No different than most new cars.
Cheers!
Peter
Scheduled Maintenance (USA, Canada, and Puerto Rico)
Follow Schedule 1 if the vehicle is operated mainly where none of the following conditions
apply.
If any do apply, follow Schedule 2 (Canada and Puerto Rico residents follow Schedule 2).
l Repeated short-distance driving
l Driving in dusty conditions
l Driving with extended use of brakes
l Driving in areas where salt or other corrosive materials are being used
l Driving on rough or muddy roads
l Extended periods of idling or low-speed operation
l Driving for long periods in cold temperatures or extremely humid climates
guy_incognito said:A quick reference guide came with my car. It only listed a scheduled maintenance plan for every 3750 miles - so that would seem to infer that they expect oil changes to be done at that frequency.
Yeah, which is once a year for me. I've stopped analyzing the oil on my 97 Miata since I barely drive it more than 1500 miles/year.MX6toMS3 said:How often do you send the oil out? Each time you change it?
gr? said:One thing I do is send out my oil for analysis, which gives a good snapshot of the condition of the engine (wear & tear, leaks, over-used oil, under-used oil).