was at advance auto parts yesterday and saw Peak full synthetic oil for only 6.29 per quart. usually from other brands synthetic is 10 dollars or more per quart.

does anyone run Peak full synthetic? what oil filters should you use with a synthetic? and do you think this would be a good choice to go with for my next oil change? i would prob still change it every 5k but its only a dollar more then reg 5w30 that i would normally use.

lemme know what yall think. thanks

If u went to Walmart they carry a range of full synthetics. I use exclusively Pennzoil Platinum for my vehicles and 5Q jug is $22-$24 bucks i.e $5/Q. Its just me, I trust nothing other than PP.

oh cool alright well ill check that out as well. always just got reg 5w30 cause i thought synthetic would cost too much but now ill have to reconsider

thanks

I get 5 qt. jugs of Mobil 1 synthetic at Walmart for around $25.

how long do you go with your synthetic before changing? i would prob still go 5k even if i switched

7500 miles

what oil filter do you use with it?

I've always picked up Mobil1 5W-30 at Walmart or Costco when I could get it at $5/qt. At my next annual OC, I will be switching to Mobil 1 0W-30. I also switched from the OEM filter to the Purolator PureONE #PL30001 filter (http://www.amazon.com/Purolator-PL30001-PureONE-Filter-Pack/dp/B000E8XFPU/ref=sr_1_1?ie=UTF8&qid=1311577829&sr=8-1). I've done my research... it is Purolator's premium, top-quality filter and is larger than OEM so I can get a full 7 qts in there. You can get 'em from Amazon for only $5.76/ea! and they qualify under their FREE SUPERSAVER SHIPPING program.

http://ecx.images-amazon.com/images/I/41qhoCyJLQL._SL500_AA300_.jpg

wow that sounds like a good deal. so what are benefits of putting in 7 qts? last longer? could you still only put in 5 with the larger filter?

I use the OEM filters since I was able to pick up a case of them for $35. I'm also running the 0W-30 Mobil 1.

how do you benefit from 0w30?

That PL30001 is a coffee can all right! I used that once before, when the casing was still blue color, it's good stuff.
The 0w30 is a thinner oil. Potential for better lubrication on startup and also better gas milage. Nothing drastically better, but better nonetheless.
I use a 5w30 synthetic and change it every 10k or 10-12 months.

is there any negatives to 0w30? i might give it a shot in a non synthetic for 5k miles and see if i can tell any difference

is there any negatives to 0w30? i might give it a shot in a non synthetic for 5k miles and see if i can tell any difference

The price.

is there any negatives to 0w30? i might give it a shot in a non synthetic for 5k miles and see if i can tell any difference

That is a good question. Supposedly, Mobil 1 0W-30 does offer a slight fuel economy improvement over M1 5W-30. Note that I said "slight" improvement. If you're hoping for 4-8 MPG, forget it.

M1 0W-30 and 5W-30 are both rated the same by Mobil and both exceed API/ILSAC SM/GF-4. They both also meet the tougher European spec ACEA A1/B1.

Hot viscosity, there are two different SAE approved ways of measuring. The first is a kinematic test at +100 C oil temp, which is under ASTM D445. Any oil claiming to be a "30" such as straight 30, 10W-30, 5W-30, or 0W-30, must test out to 9.3-12.5 cSt (CentiStokes).

The second test is a dynamic one under ASTM D4683. This is a 'high temperature shear test', run at +150 C oil temp, and 10^6 shears/sec. Any oil claiming to be a "30" must have a minimum viscosity of 2.9 mPa/s (Milli Pascals per sec).

Mobil 1 5W-30 is rated by Mobil as having a kinematic viscosity of 11.3 cSt, and a dynamic viscosity of 3.09 mPa/s. Flash point is +230 C.

Mobil 1 0W-30 is rated by Mobil as having a kinematic viscosity of 11 cSt, and a dynamic viscosity of 2.99 mPa s. Flash point is +228 C.

As you can see, those results are a virtually identical rating. If one oil tested, say, 12.3 vs 11 cSt, that is a difference. Or if one oil had a HTHS of 3.6 mPa and the other had 2.9, that's statistically significant.

A lot of conventional oils are designed to shear on purpose, in an attempt to enhance fuel economy. Mobil 1 oils are designed not to shear at all, providing better engine protection.

My guess is, switching to 0W-30 from 5W-30 is an investment in 1) startup protection, and 2) slightly better mileage in cold climates. In some areas, there is a significant pricing difference between the two viscosities, I've heard upwards of $2 more/qt for the 0W-30. You'd have to weight the cost/benefit at the cash register.

wow so much info to take in! appreciate all your efforts you know a ton. would send points but it wont let me. thanks