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Old 06-25-2001, 12:16 PM   #1
Santo Domingo 2.5 RS
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Question Wich type of motor oil do you use?

Wich sae of motor oil do you typically use? and wich brand would you think is the best?
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Old 06-25-2001, 12:42 PM   #2
roninscar
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I go with Mobil1 10w30. The was a lot of discussion here awhile ago about when you would make the switch to synthetic (so that your engine was properly broken in) but synthetic oil is superior in every measurable category to conventional. It is slipperier, it resists shearing, it takes significantly more heat to burn, it suspends particles better, it just plain rocks.

Go synthetic after 8k miles, your car will thank you.

Cheers,
scotto
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Old 06-25-2001, 12:43 PM   #3
skidplatez
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Castrol Syntec
10w 30

change every 6000 miles
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Old 06-25-2001, 12:49 PM   #4
Santo Domingo 2.5 RS
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I am about to shift to synthetic, right now my car has 17K on it and i am using some MOTUL stuff, but is not synthetic, and i am planning on changing to Redline 10W30, since i changed my tranny oil the other day wit MTL 70W 80 and my rear diff with 75W90 Redline, and i really can notice the difference in my gears. And because some mechanic told me the other day, that with a really good oil you can get a lot more power from your engine. What do you think?
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Old 06-25-2001, 01:04 PM   #5
inpreza kid
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don't know about getting more power with oil but when i switched to mobil 1 synthetic i noticed the engine ran smoother and quieter.
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Old 06-25-2001, 01:10 PM   #6
Soob
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I have had the same experience as Impreza Kid. Once I switched over to Mobil 1 synth, I immediatly noticed that my engine ran smoother at higher revs. I also used the same weight as roninscar did. I'd totally recommend switching over. And hey, why not spoil your car alittle?
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Old 06-25-2001, 01:12 PM   #7
MBX Motorsports
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I switched to Mobil1 10w30 at 3,000 miles on the counter. I always run Mobil1 in all of my cars, including the '97 Cherokee.
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Old 06-25-2001, 01:34 PM   #8
CSM101
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Mobil 1 5W-30, switched at 10,000 miles.
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Old 06-25-2001, 01:42 PM   #9
Fusion
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I use Lubro Moly. It's a german brand I think. My friend (a partner in auto parts wholesale distributor) said it's the best oil he has access to.
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Old 06-25-2001, 01:45 PM   #10
Penphoe
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Currently I'm running Mobil 1 5W-30. I wanted 10W-30, but the store that i bought my oil from didn't have any in stock. It's still within the acceptable range for my Scooby and since I live up here in Vancouver, we very rarely see +40C temperatures during the summer time!

LaterZ!
Darren!!
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Old 06-25-2001, 02:09 PM   #11
Martin Ritchie
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Mobil 1 5W-30 after 3,000 miles or 4,800 kilometers, whichever comes first.
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Old 06-25-2001, 02:11 PM   #12
Santo Domingo 2.5 RS
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What do you think about Redline 5w 30 or 10W 30?
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Old 06-25-2001, 02:37 PM   #13
gavin
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Redline is very good. Everything I've read about synthetics ranks em about like this:

1) Amsoil
2) Redline
3) Mobil 1

There is no magic number for switching to synthetics. You just need to wait until your engine is broken in. Usually the first regularly scheduled oil change is fine.

I'm not sure about the newer models, but 5w30 is the recommended weight for my vehicle. I usually run 10w30 in the summer, though, since I drive it pretty hard.
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Old 06-25-2001, 03:09 PM   #14
ColinL
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Castrol Syntec 10w30.

If it were a higher performance machine I'd worry about more. AMSOil series 2000 would be waste of good money in this EJ25 truck motor.

Syntec is good enough, and I save enough to buy parts that make a difference.
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Old 06-25-2001, 03:46 PM   #15
geoffj
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I just switched from syntec blend to syntec today and I can really notice a difference. The engine runs alot smoother and seems to rev a little faster. I thin it was good for like 10 mental hp
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Old 06-25-2001, 05:00 PM   #16
jlyttle
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Default Mobil 1

5w30 at first, just switched to 10w30

I switched at 1250 miles. I use Mobil 1 because I can get it anywhere, and it is as good as I need.
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Old 06-25-2001, 06:29 PM   #17
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I use AMSOIL 5w-30/Subaru filter every 3000 miles. Car runs much smoother with the AMSOIL compared to Mobil1. It is worth the $7.99/qt I pay for it.
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Old 06-25-2001, 06:44 PM   #18
Overtime
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I've never noticed a difference between a car with fresh synthetic and a car with fresh dino oil. It just feels good to have a car with the oil changed.

Speaking of oil, does anyone have any opining to do on the Valvoline VR-1 racing oil?
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Old 06-25-2001, 08:04 PM   #19
snowone
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I picked up my 99 GT w/ 24k on it last Oct... switched it to 5-30w Mobil 1 in Feb. Noticeable difference... i dunno... like OT said, "It just feels good to have a car with the oil changed"

Sat was subie maint. day, I changed the engine oil and while I was at it drained the trans and am now running some Redline 70-90w. I have yet to treat the rear diff. Sure did notice a sugnificant difference in shifting... much smoother, less crunchy. Better mileage?? I'll take it if I get it.

I was bummed that I failed to realize (until too late) that the trans drain plug is larger... and had no fresh sealer/crush ring (anyone know what size ring this takes ?? M20+ ?). Is this an issue? It doesn't seem to be leaking... yet!?!?

How about filters everyone? Strickly Subaru parts... or Fram basic, TG, DG... or other? They've all got to be about the same, eh?
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Old 06-25-2001, 08:49 PM   #20
Santo Domingo 2.5 RS
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How many qts of oil do our engines need? i have never changed the oil myself
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Old 06-25-2001, 08:59 PM   #21
Penphoe
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The 2.5 engine takes about 4 litres of oil. Look in your owners manual for the correct amount.

LaterZ!
Darren!!
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Old 06-25-2001, 09:22 PM   #22
gavin
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It's rated at just over 4 quarts, but I use an even 5 quarts every oil change, if you change the filter, too.
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Old 06-25-2001, 09:52 PM   #23
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Snowone-
The general concensus here is that the bottom-end orange Frams are crap. The higher-end grey-painted Frams are supposedly decent, but relatively expensive. Go with Purolators or genuine Subarus, which are said to be made by Purolator anyway.

And to the other guys-
The 2.5 takes a hair under 4.5 quarts with a filter. 4 quarts will put it between the marks on the stick, wich is an acceptable range, but 5 quarts will overfill it.
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Old 06-25-2001, 10:18 PM   #24
ExchangeGuy
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I have used mobil 1 one oil change then I wanted to try anything to get a little more torque out of the eng. So i switched to Royal Purple 10w-30. I do feel a slight bump in torque when I sling out of the corners when auto-xing. the engine also runs cooler and feels more powerful. Of course the mileage sucks more cuz my foot is heavier...
It's like 6.99 a qt but in my opinion it's worth it. My times have been improving since changing to RP. I have also install a water wetter in the radiator from RP that has dropped temps about 4-5 deg. The eng runs even more powerful now than ever! Especially since I live in the hot climate of houston Texas with the A/C on full blast! Just my opinion.

Forrest
Texas Subaru Motorsports
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