whats a good oil

i heard that if you run synthetic you have to do it from the start of the engines life, is that true? my mechanic said this, so its not like one of my friends who doesn't know anything
 
People switch to syntechic all the time. I dont buy it, but I dont know hes wrong either...
 
i heard that if you run synthetic you have to do it from the start of the engines life, is that true? my mechanic said this, so its not like one of my friends who doesn't know anything

I always heard that you should use dino oil to break in an engine, then you can switch to synthetic
 
VERY wrong. There is a big difference in filters. They are not just 'empty cans'. And to those paying 10-20 for a K&N, Onlinemazdaparts.com has OEM (best filter, period) for 7$.

Yea but unless you live around charlotte, you have to pay extra for shipping
 
Yea but unless you live around charlotte, you have to pay extra for shipping

Shipping rate at Onlinemazdaparts is a flat rate 6.50$. Doesn't matter if you live in Charlotte or anywhere else in the 48 cont states. Which most people that order filters online or from the dealer stock up once and are set for a year or more. Buy 6 filters and its a dollar a filter to ship.,, Or like myself, I just bought quite a few suspension parts, and when ahead and threw in 3 filters since I was going to pay the same shipping fee either way.
 
penzoil platinum, royal purple, amsoil


right now im running penzoil platinum mixed with a quart of royal purple and have been very happy with it. im think im running like 6k without a change LOL (no job *sadface*
 
I ran durablend in my P5 but it's hard to find...if you're over 75k, switch to MaxLife blend. Valvoline is good oil and doesn't cost you an arm and a leg. 5qt jug at Walmart for less than $20. Get a good filter...none of this Fram crap. There are a lot of highly recommended ones, but I like the purolator pureone filter. It's cheaper and has a very high filtration rate.

Just for your knowledge since you're a Valvoline guy, Durablend is the exact same as Maxlife, minus the additives. So don't bother, just use high mileage even if it's 50k if you want the synthetic blend.

As far as switching to or from synthetic oils, you can do it as you feel. I'm not sure where that rumor came from, but if you couldn't mix oils where does synth. blend come from?

For breaking in an engine I have no information on that one, sorry.

I myself used 5w20 Valvoline Full Synthetic last oil change in the Mazda. I wouldn't go up to 5/10w40 it seems to thick to me..

In my Subaru I use 5w30 Valvoline MaxLife, although it's at 50k miles as stated above, why not? I don't like leaky engines...
 
Since my Mazda parts guy is a bud, I get OEM filters free for both of our '03.5s (P5, ES). BTW, many posters here follow what may be considered "The Word" found in most motor oil references--OEM filters are better than aftermarket choices, including the K&N, or any other so-called "premium" filter.

Both of our Mazdas run Valvoline 5W-20 syn. My '5 uses a quart between 6-7K mile changes--engine has 140K--and is driven primarily at 65-75 mph daily. Wife's ES (58K) burns little, if any, between changes.

Some wrenches claim you will use more syn than dino between changes because of molecular differences in syn vs. dino oil, though from everything I've been able to research this is open to question.
 
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Since my Mazda parts guy is a bud, I get OEM filters free for both of our '03.5s (P5, ES). BTW, many posters here follow what may be considered "The Word" found in most motor oil references--OEM filters are better than aftermarket choices, including the K&N, or any other so-called "premium" filter.

Both of our Mazdas run Valvoline 5W-20 syn. My '5 uses a quart between 6-7K mile changes--engine has 140K--and is driven primarily at 65-75 mph daily. Wife's ES (58K) burns little, if any, between changes.

Some wrenches claim you will use more syn than dino between changes because of molecular differences in syn vs. dino oil, though from everything I've been able to research this is open to question.

I've heard this question come up quite a bit also. A lot is said that if you put in full synthetic that it is "thinner" and will therefore leak out (or burn) faster then normal oil. Truth is that it isn't actually any thinner, it has the same viscosity. It just moves easier and is a better lubricant. Same basic size molecules, just more consistent in size and shape, more uniform you could say, then your basic conventional oil.
 
whats up with everybody thinking royal purple is so great? lol. ive heard so many bad things about royal purple because is becomes thin extremely fast(almost watery). i ran Royal Purple 5w 30 in my WRX one time and never ran in again.
 
i ran it in my car and i had to put more in every 500 miles so i got motul oil and i was able to go 5000 miles with nothing missing like he said it gets thin fast and then just burns up
 
i ran it in my car and i had to put more in every 500 miles so i got motul oil and i was able to go 5000 miles with nothing missing like he said it gets thin fast and then just burns up

Wtf is motul oil?

It doesn't "get thin" any faster then normal oil does. If anything, your cheapo oil is too thick...
 
I have been running Pennzoil Platinum 5w30 until my last change. Switched to Amsoil 5w30. Always run the Purolator Pureone filter that's in the book for the 626, since it's a little bigger than the one for the P5. The Pennzoil is some great stuff, going to see if the Amsoil is worth the extra $8 or not over the Pennzoil.
 
I use Mobil1 10W-30 High Mileage, with good results. I am also an Amsoil dealer but with Mobil1 available at the local Wal Mart with an awesome price ($20 per 5 quarts), it's hard to resist. I use Wix/Napa Gold oil filters.
 
Mobile 1 synthetic most of the car's life, recently changed to Valvoline synthetic. Always used OEM filter.
 
I've used Mobil 1 and a k&n filter since the car had 5k on it. I just switched to Pennzoil Platinum since the Mobil 1 has dropped a grade, we'll see how it goes. For the money I would go with Walmart Mobil 1 and a Bosch or OEM filter. The 626 v6 filter is a bit bigger and fits fine. I do my oil changes @ 5k and the oil always comes out like new, just a shade or two darker. Also, I put Royal Purple in the transmission a few years ago. I've heard good and bad, but for me it shifted better than new.
 
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