[hman]

I have a higher mileage car, 100k+ miles and was wondering if
i started using 5w-30 syn oil in my car is it bad? Or should i stick with my usual 10w-40? I haven' tused synthetic on my car yet, and wanted to try it. Or is that a bad choice. Also those high mileage motor oils i assume they are not synthetic since they don't advertise it as such. And are any of them good you think? Thanks.

 

[astrochimp]

i always use valvoline and since my car is at about 155k miles..i switched to valvoline max life, might as well.

I don't think full synthetic would be a problem in ur car..but i would goto a Semi Synthetic first for a couple oil changes.

That's what was recommended at the ENGINE OIL BIBLE website

 

[lordy611]

Switch to full syn at any time UNLESS your car leaks oil. Then dont switch. Syn will leak out quicker (more slippery) and more expensive to boot.
Hi mileage oils are for engines that have problems like leaking valve seals or guides, or burn a little oil. If yours does not use oil more than maybe 1 qt per 1000 miles, I would switch to 5w-30 full syn. And while you're at it, use an AC Delco or Purolator filter, not Fram.

 

[SilverLS]

dont forget about Mazda, they make good filters for the mx6 i hear

 

[parisifal]

Don't use anything BUT a Mazda filter. Everytime i change my oil i take an extra trip to the dealership just to get that filter.

Reason being it has a special baffle design that helps out with the oil system. Any non Mazda filter you buy won't have this baffle system. I got a stern lecture a long time ago from a respected member about the whole thing and Mazda mechanics confirmed those facts.

 

[astrochimp]

Don't use anything BUT a Mazda filter. Everytime i change my oil i take an extra trip to the dealership just to get that filter.

Reason being it has a special baffle design that helps out with the oil system. Any non Mazda filter you buy won't have this baffle system. I got a stern lecture a long time ago from a respected member about the whole thing and Mazda mechanics confirmed those facts.

i thought mazda farmed out their filters to someone else...
I don't think mazda puts as much money into oil filter technology as MOBIL or WIX or PUROLATOR..i'm just guessing.
MOBIL 1, WIX or Purolator Micronic are all GREAT oil filters..just check the NET for independent testing results.

I have heard of an oil baffle in the pan area but
I have NO idea what a 'BAFFLE' does in an oil filter...keeps it quiet?