What engine oil to use.

Not sure when the oil and filter was done on my version 8 STi. Do you have any recommendations on what to use over winter?

Its done about 137000 k's and all seems to do what it should do. Cheers

5w30 sm grade. Use something branded like castrol/eni/caltex/mobil/elf/total/shell.

Castrol Edge 10w60 all year round.

^ Ditto !

A great oil unfortunately a grade that doesn't get discounted often.

 loner said:

Castrol Edge 10w60 all year round.

I dont take bait that easily.

Since you have a flasher car than loren and it has avcs stick to a 5 or 10w30 hes still figuring it out.

Whats that elf **** you use loren full syn sm 10w50?

Seems like 5w or 10w30 is the general way to go. What adv/disadv woukld a 10w60 give.

 evowrx said:

I dont take bait that easily.

Since you have a flasher car than loren and it has avcs stick to a 5 or 10w30 hes still figuring it out.

Whats that elf **** you use loren full syn sm 10w50?

I don't use ELF anymore... the new motor gets Castrol Edge 10w60.

And it was on special this week... but it wasn't a very good special

A common misconception is that the viscosity is the only "spec" that matters. Thats a crock you can have a 15w40 petrol only spec and a diesel only spec. Then you have a 1960s suitable 15w40 and one for 2000-.

Another misconception is that going up a level in viscosity will net you mad engine protection. Also wrong it can end up doing more harm than good. It all depends on app and the composition of the oil. Sure a car that specs 10w30 semi syn sm would benefit from 10w40 semi syn sm in a tortured circumstance but youre far better not being cheap and going to a full syn that meets the same spec.

When the base oils vary greatly as in 10w60 the oil is pumped with additives to help the two bridge the gap which makes for a less stable oil. Then theres the drag of the thicker oil...but you prob shat before you raced to balance that out.

If you want a race oil get a fully syn sm 5 or 10w30 or 5 or 10w40 for pre avcs and 5w30 for newage/avcs.

I really cbf expanding on this or arguing i should just write a sticky and lock it so people who see a bottle that says racing on it and become automatic oil experts dont pipe up.

At the end of the day if you can damage an engine thro running any oil between 5-15w30-60 ill eat my hat. Providing you service as required and everything else is as it should be it wont happen.

Period.

I'm wearing socks and shoes on my feet.

I used that Penrite HPR10 10w40+10 or whatever full synth, is that ok?

yes

If you want penrite just buy the repco branded equivalent. Same oil just cheaper.

Unrelated but you know big dave ae adam? Was talking subaru and your name came up lol.

Wouldnt use anything other than 5w30 with a vvt engine, as anything thicker blocks the vvt solenoids

 evowrx said:

If you want penrite just buy the repco branded equivalent. Same oil just cheaper.

Unrelated but you know big dave ae adam? Was talking subaru and your name came up lol.

I know of him, he hooked me up with bendix pads once, hes not a fan of me any more you could say, though you probably already got that

THough I didnt think repco did a full synth of their own brand, I only got the penrite at SCE 30% off sale so was only $50 or so.

is it good if i use semisynthetic?

 evowrx said:

A common misconception is that the viscosity is the only "spec" that matters. Thats a crock you can have a 15w40 petrol only spec and a diesel only spec. Then you have a 1960s suitable 15w40 and one for 2000-.

Another misconception is that going up a level in viscosity will net you mad engine protection. Also wrong it can end up doing more harm than good. It all depends on app and the composition of the oil. Sure a car that specs 10w30 semi syn sm would benefit from 10w40 semi syn sm in a tortured circumstance but youre far better not being cheap and going to a full syn that meets the same spec.

When the base oils vary greatly as in 10w60 the oil is pumped with additives to help the two bridge the gap which makes for a less stable oil. Then theres the drag of the thicker oil...but you prob shat before you raced to balance that out.

If you want a race oil get a fully syn sm 5 or 10w30 or 5 or 10w40 for pre avcs and 5w30 for newage/avcs.

I really cbf expanding on this or arguing i should just write a sticky and lock it so people who see a bottle that says racing on it and become automatic oil experts dont pipe up.

At the end of the day if you can damage an engine thro running any oil between 5-15w30-60 ill eat my hat. Providing you service as required and everything else is as it should be it wont happen.

Period.

Whats the car?

2002 impreza IS 1.5L manual

 tkgit said:

2002 impreza IS 1.5L manual

Any of the above will work fine. Favour the 5w30 or 5w40 with you living in the cold.

 evowrx said:

Any of the above will work fine. Favour the 5w30 or 5w40 with you living in the cold.

can i use repco?

 tkgit said:

can i use repco?

Yep.