The highest priced batteries are usually the AGM (sealed glass mat). They are available from various companies. I don't know that any particular battery company is much better than the others. AGM might have some advantages but all batteries can run down when they sit for a period of time.
You...
The STB clears my year and model. Part of the 2015 year might be involved.
APPLICABLE MODEL(S)NINS
2012-2013 Mazda3 (SKYACTIV 6 M/T)
2014-15 Mazda3 (Japan built 6 MIT) with VINs lower than JM1 BM******276367 (produced before July 1, 2015)
2014-16 Mazda3 (Mexico built 6 MIT) with VINs lower than...
If you NEVER change the fluid eventually you might have rust in the brake lines and cylinders, but it takes years for that to happen. I've heard it's best to change it every two years, but I think your local climate has some influence on how fast brake fluid degrades.
I picked up some Pennzoil platinum 5w-30. It was hard to find on the shelf because there were so many other grades. Initially I accidently picked up a 5w-20 but I put it back. For some reason Ford always recommends 5w-20, but I've read there's a big recall for GM and the temporary fix is 5w-30...
Yeah, it seems to me that if the plug fires with a decent spark in the right location at the right time it should give good power. So I doubt any regular person would be able to tell any difference, as long as both types of plugs fit properly and have the proper characteristics.
The double fine...