Synthetic Oil??? - Page 2

**WC LATHE WERKS** · 02-28-2008, 02:53 PM

Ive always run regular oil in my EJ205.
5w30 pennozoil in winter
10w40 pennzoil in summer

my cousin recommended using Amsoil next time, but havent heard about it on my own

santacruz02 · 02-28-2008, 03:23 PM

Listen in the begining of this thread someone posted a link to (everything about oil) its pretty much just what it sounds like. In there it states there is no reason to be changing oil weights based on seasonal climates. Your car probably doesn't run hot enough in the winter to take advantage of a 10w-40 oil. 5-30 is fine, as recommended it the owners manual. I'm sure they took into thought who would be driving these machines and how the would be driven. 5w-30 is a thick enough yet thin enough for day to day situations while occasionly hitting the track.
As the oil gets hotter than normal on track events it thins some causing the amount of oil getting sprayed higher, more flow works more to seperate engine parts.

Does anyone know normal operating temp for a stock sti
Also temp for a mildly upgraded sti too?

02-28-2008, 02:53 PM	#16
WC LATHE WERKS Authorized Vendor Car: 04WRX /STi Swap Fav Mod: TiC AST Coilovers!!! Location: Tri-State, USA Posts: 1,307 Join Date: Nov 2005 Trader Rating: (90)	Re: Synthetic Oil??? Ive always run regular oil in my EJ205. 5w30 pennozoil in winter 10w40 pennzoil in summer my cousin recommended using Amsoil next time, but havent heard about it on my own This ad is not endorsed by this member. Please register or login to hide this ad.

02-28-2008, 03:23 PM	#17
santacruz02 Junior STI Driver Car: Blue 06 Sti Location: NJ Posts: 108 Join Date: Aug 2006 Trader Rating: (0)	Re: Synthetic Oil??? Listen in the begining of this thread someone posted a link to (everything about oil) its pretty much just what it sounds like. In there it states there is no reason to be changing oil weights based on seasonal climates. Your car probably doesn't run hot enough in the winter to take advantage of a 10w-40 oil. 5-30 is fine, as recommended it the owners manual. I'm sure they took into thought who would be driving these machines and how the would be driven. 5w-30 is a thick enough yet thin enough for day to day situations while occasionly hitting the track. As the oil gets hotter than normal on track events it thins some causing the amount of oil getting sprayed higher, more flow works more to seperate engine parts. Does anyone know normal operating temp for a stock sti Also temp for a mildly upgraded sti too? This ad is not endorsed by this member. Please register or login to hide this ad.