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10-18-2022, 03:06 AM | #1 |
Scooby Newbie
Member#: 531815
Join Date: Oct 2022
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Switching to 5w30?
Hello,
I was curious as to how many people on here have made the switch to 5w30? I heard that the only reason we run 0w20 is just for emissions. If that’s the case I will immediately switch to 5w30.
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10-18-2022, 07:34 AM | #2 |
Big Ron
Super Moderator Member#: 18062
Join Date: Apr 2002
Chapter/Region:
MAIC
Location: I can save you a ton of cash
Vehicle:on car parts so PM me b4 j00 buy |
Are you a Tribologist? No? Then keep using what you are using. The issue with people and oil and cars is they think that what they buy matters and it don't. I have been using Walmart Supertech full synthetic oil in my car since Nixon was in office. Its the cheapest synthetic oil on earth save a rogue sale somewhere else. And my car is 19 with 320,000 miles with I'm guessing 70 oil changes under the hood in that time.
You changing the weight means you think you are going to see a benefit. You are not. You changing the brand means you think you are going to see a benefit. You are not. I have used some earth shaking oils in my car...oil so rare, I had to order online or go to an industrial lubricants store to purchase. And all I got for my troubles was a lighter wallet. Get the cheap stuff in the weight specified. Sure....if you find a sale on Pennzoil at NAPA for $3/qt and they only have 5w30, knock yourself out and run it for two cases, but there's no logical reason for you to randomly switch weights. |
10-18-2022, 08:07 AM | #3 |
Add Lightness
Moderator Member#: 13699
Join Date: Dec 2001
Chapter/Region:
NESIC
Location: Hopkinton, MA
Vehicle:2021 Building It Better |
What kind of engine? Isn't 5W 30 specified for the EJ25? (My son's got a 20 STi and it is). I have a couple FBs, a 13 and 19. The 13 had the short block changed at just under 100k miles because of excessive oil consumption, which I find sorta funny because Hyundai specs 3 times the consumption as being normal. Anyways, at about 150k miles, it started with the oil light on at about 4k miles. I always change oil at 5k miles. So switch from 0Water 20 to 5W 30 and guess what? Not a drop consumed in 5k miles. So I am a proponent of upping the viscosity to avoid the EPA consumption. What kind of oil? I'm with Ron on this. I use the "who cares?" oil. Maybe it's Amazon Basic Oil or Pennzoil made from natural gas or Quaker State made from green beans. If it's 50 cents cheaper for a 5 quart jug, I'm buying it.
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10-18-2022, 08:42 AM | #4 |
Scooby Guru
Member#: 428511
Join Date: Aug 2015
Location: philadelphia
Vehicle:2016 STI |
my EJ25 spec'd 5w-30
I'd use 5w in winter and 10w in summer don't see much calling for 0w-20 the lighter weights aren't for emissions it's for a slight bump in mileage so manufacturers can meet the CAFE requirements that do less than nothing to increase fuel mileage of the actual cars on the road |
10-18-2022, 09:11 AM | #5 |
NASIOC Vendor
Member#: 198281
Join Date: Dec 2008
Chapter/Region:
MAIC
Location: Virginia
Vehicle:2005 WRX/STi WRB of course |
0W-20 is the new FA24 spec. If that's what he has, I'd stick with it.
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10-18-2022, 09:11 AM | #6 |
Scooby Specialist
Member#: 508105
Join Date: Nov 2019
Chapter/Region:
NWIC
Location: Greater Seattle Area
Vehicle:Link G4X flex tuned 02' EJ205 20G 6MT wagon |
Might want to start with what car and motor your have OP
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10-19-2022, 11:25 AM | #7 |
Scooby Specialist
Member#: 39562
Join Date: Jul 2003
Chapter/Region:
MAIC
Vehicle:My02 WRX Sedan 5MT WR blue |
EJ 205.
Likes 5w40 and 5w50 oil. Does not like light weight oils. 0w20 5w30 Light weight oils results in excessive oil usage |
10-19-2022, 12:24 PM | #8 |
Scooby Guru
Member#: 428511
Join Date: Aug 2015
Location: philadelphia
Vehicle:2016 STI |
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10-21-2022, 11:02 PM | #9 |
Scooby Newbie
Member#: 91467
Join Date: Jul 2005
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I used to switch between Castrol 5w30 and 10w40 during winter and summer, when I found a shop I trusted the owner told me to switch to Castrol high mileage 5w30 year round. She's got 286,000 Puget Sound miles on her now, and is still going strong. YMMV.
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10-24-2022, 01:40 PM | #10 |
Scooby Newbie
Member#: 531662
Join Date: Oct 2022
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Anyone running an IAG block? That’s what I have and im wondering if 5w-30 is better than what the previous owner said being 5w-40
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10-25-2022, 11:18 AM | #11 | |
Big Ron
Super Moderator Member#: 18062
Join Date: Apr 2002
Chapter/Region:
MAIC
Location: I can save you a ton of cash
Vehicle:on car parts so PM me b4 j00 buy |
Quote:
You running 30 vs 40 oil, as a difference, will represent a six sigma difference over a 100 year period. |
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11-12-2022, 08:24 PM | #12 |
Scooby Newbie
Member#: 532116
Join Date: Nov 2022
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FB20B - 0w20 Synthetic. Can't go wrong with sticking to the specs.
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11-12-2022, 09:32 PM | #13 |
Add Lightness
Moderator Member#: 13699
Join Date: Dec 2001
Chapter/Region:
NESIC
Location: Hopkinton, MA
Vehicle:2021 Building It Better |
Fortunately, with the F engines, a check oil light simply means your low on oil. Not like the old EJ where it means "your engine is toast".
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11-29-2022, 08:08 PM | #14 |
Scooby Newbie
Member#: 385002
Join Date: Mar 2014
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I have had no issues switching to 5w30 in multiple subarus. The oil consumption is significantly reduced. IMO 0w20 oil is mostly a fuel mileage game by manufactures.
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12-06-2022, 05:15 PM | #15 |
Scooby Guru
Member#: 487
Join Date: Nov 1999
Chapter/Region:
TXIC
Location: Houston TX
Vehicle:1998 /2005 STunIcorn Acadia Green USDM 22b |
W.I.O.S. oil is the best
(just change your oil) pretty sure Unabomber said this! |
12-06-2022, 05:15 PM | #16 |
Scooby Guru
Member#: 487
Join Date: Nov 1999
Chapter/Region:
TXIC
Location: Houston TX
Vehicle:1998 /2005 STunIcorn Acadia Green USDM 22b |
W.I.O.S. oil is the best
(just change your oil) pretty sure Unabomber said this! |
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