What motor oil are you running in your car?

[chaoskaze]

Originally Posted by Sweet48

0w20 eneos for winter (stored this year) and motul 5w30 summer/track use. Might be just me but I feel it runs much smoother on 5w30 and when I was driving last week I swore I heard like a rattle/knocking sound or something (still on the 0w20 eneos). Might just be hearing things most likely lol I'll see what happens when it warms up a bit and I change the oil.

one thing I hate about this car is that I constantly think I hear rattle/knock!

Actually I think it is.......but car runs fine & weird sound goes away lol.' I always thought boxer is "suppose" to be more smooth.

[Muaddib]

I don't see any benefit on running anything other than the oem 0w20. UNLESS you are tracking your vehicle.

[regandr]

If you are tracking your car, you need a completely different oil than if you are using it only or mostly on the street. for track use, you need a synthetic base stock oil. most synthetic oils today do NOT come from a synthetic base stock. synthetics resist heat much better (i.e. track use). I use exclusively 0W-40 Mobil 1 European formula because it comes from synthetic base stock. 40W to better resist heat. other Mobil 1 oils do NOT. check with mfg. if you dont believe me. I have 50 track days on '13 BRZ and change oil and filter every other weekend.

[acro]

Royal purple 0 20w

Had no issues with my previous car which was pushed hard, so I'm just continuing with rp

[Bonburner]

idemitsu 0w20

so far I'm liking it, so did my pocket, 3 gallon containers for $70 on amazon

[blown]

pennzoil ultra platinum 0w20

[bluesubie]

Originally Posted by regandr

for track use, you need a synthetic base stock oil. most synthetic oils today do NOT come from a synthetic base stock. synthetics resist heat much better (i.e. track use). I use exclusively 0W-40 Mobil 1 European formula because it comes from synthetic base stock. 40W to better resist heat. other Mobil 1 oils do NOT.

Please elaborate on your claim that most synthetic oils do NOT come from a synthetic base stock as well as other Mobil1 oils do NOT.

You are going by very old, outdated assumptions. If you are referring to Group III base stocks, Mobil1 0W40 does indeed use Group III base stocks. Try doing a google search on Visom. Mobil1 uses Group III, Group VI PAO's, and Group V aklylated naphthalene base stocks across all of their synthetic oils. Most synthetic oils today are blend of at least two base stocks.

And Shell's Group III GTL base stocks match or beat PAO's. And the overall package is more important than base stocks anyway.

[Grip Ronin]

Total 5w40

[Juggles]

Also using the euro forumula mobil1 0w-40 in the supercharged FR-S I occasionally track.

[Xuningshen]

Originally Posted by 2013GTRNate

I was using the high quality OEM stuff but recently switched to Mobile1 synthetic. I use 0w40 Mobile1 in my GT-R so I figured why not use 0w20 Mobile1 in my BRZ. Thus far that oil is just as good as the dealer oil. I have used Mobile1 forever in all of my cars.

I do track my car. That is why I had to get the Oil Cooler. Time will tell whether a radiator upgrade is necessary.

would that be 0w-20 mobile 1 AFE you are using? i've been using it too... Did a canyon run and didn't wanna switch out to 5w-30 just for the few hours. I dont like the oil pressure readings i'm getting when the 0w-20 oil is pretty hot... it was 220^ F and oil pressure was sitting around 6-7 psi idle. been thinking about using at least the 0w-30 for daily driving. maybe a 5w-30 for daily too.... (live in moderate climate, socal).

[Pat]

Pennzoil Platinum 5w-20 because a 5qt jug is $25 at Wal Mart.

[streetwaves]

In all of my cars that call for 0w20, I either use TGMO, Sustina, or Mazda w/ Moly. All good choices. The Sustina is probably the best of the bunch, but the other two are so good as well and considerably cheaper that they're probably the smartest choice.

[viscositosis.rex]

Originally Posted by bluesubie

Please elaborate on your claim that most synthetic oils do NOT come from a synthetic base stock as well as other Mobil1 oils do NOT.

You are going by very old, outdated assumptions. If you are referring to Group III base stocks, Mobil1 0W40 does indeed use Group III base stocks. Try doing a google search on Visom. Mobil1 uses Group III, Group VI PAO's, and Group V aklylated naphthalene base stocks across all of their synthetic oils. Most synthetic oils today are blend of at least two base stocks.

And Shell's Group III GTL base stocks match or beat PAO's. And the overall package is more important than base stocks anyway.

Hi bluesubie.

I'm sure many are seeing Chevron Supreme hydrocracked dino 5W20 at Walmart. I consider it a blend. It can be purchased for a little over $13 for a 5 quart jug. What's the breakdown , 21cents a quart more than SuperTech? CS is known to be a thinnish oil. On the bottle, it specifically claims to keep pistons clean. I am using it now. It's fine. It should be a viable option for combating fuel dilution. Frequent oil changes are in order with this stuff anyway. The TBN is quite modest.

[bluesubie]

Originally Posted by viscositosis.rex

It should be a viable option for combating fuel dilution. Frequent oil changes are in order with this stuff anyway.

Just be glad that the twins use Toyota's direct injection technology. UOA's on the DIT Forester and the 2015 WRX aren't looking so pretty due to extremely high fuel dilution. Many uoa's are showing low 20 grade viscosity.

A lot of '15 WRX owners are moving to OAI testing for their uoa's to get a more accurate picture of fuel since Blackstone only estimates fuel.