(what weight) engine oil (for EJ20?)
#8
Registered User
iTrader: (4)
Join Date: Mar 2003
Location: East Bay / Pomona
Posts: 3,670
Car Info: '02 PSM WRX
IMHO, 5W-30 is too thin for Subarus. I find even 10W-30 thin as well. Subaru recommends 5W-30 to get the best gas mileage, while I'd rather have a small hit in gas mileage for the added protection of my motor.
Many people love Mobil1, which tends to run thin, so you're already running a thin 5W-30 with a thinner 5W-30 Mobil1 than other same rated oils. I just did the same thing as everyone else, until my motor blew. After that, I did my research, and talked to a few shops. Overall, I found most shops also don't recommend using 5W-30, nor do they recommend using synthetic oil (as that runs thinner as other same rated oil weights as well). You'll find if you ask around, a lot of people are adding a quart of oil ever 1k miles!
While I may be running a much thicker oil than what other people recommended, in using Rotella-T 15W-40 oil, I have never had to add a drop of oil between oil changes, and it's specifically built for Turbo Diesels (to me, a plus, since we're running turbos) while passing all the tests for normal unleaded engines.
Just my .02
Many people love Mobil1, which tends to run thin, so you're already running a thin 5W-30 with a thinner 5W-30 Mobil1 than other same rated oils. I just did the same thing as everyone else, until my motor blew. After that, I did my research, and talked to a few shops. Overall, I found most shops also don't recommend using 5W-30, nor do they recommend using synthetic oil (as that runs thinner as other same rated oil weights as well). You'll find if you ask around, a lot of people are adding a quart of oil ever 1k miles!
While I may be running a much thicker oil than what other people recommended, in using Rotella-T 15W-40 oil, I have never had to add a drop of oil between oil changes, and it's specifically built for Turbo Diesels (to me, a plus, since we're running turbos) while passing all the tests for normal unleaded engines.
Just my .02
Thread
Thread Starter
Forum
Replies
Last Post
chakming888
NorCal Classifieds
1
10-31-2010 10:20 PM
bluebiker
NorCal Classifieds
0
06-22-2006 10:41 AM
EndlessWaltz RS
Wanted
7
04-29-2004 02:45 PM
wrxless
Suby Shopping & Maintenance/Warranty
16
04-27-2004 08:39 AM