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#2764202 - 10/05/12 08:44 PM Should I use heavier weight oil?
Gebo Offline


Registered: 09/18/02
Posts: 778
Loc: VA
1993 Isuzu Trooper with 277,000 miles. Is using about a qt or 2 every 3000 miles. Currently using 5W-30 Penn Yellow bottle. It's got a few leaks as well. Live in SW VA near NC border. Normally 10-90 degrees.

Should I go up to a 10W-40 or a 5W-40 or what?
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#2764208 - 10/05/12 08:47 PM Re: Should I use heavier weight oil? [Re: Gebo]
Chris142 Offline


Registered: 06/05/03
Posts: 12743
Loc: apple valley, ca
I'd try 10w30 to see if that makes any difference
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#2764217 - 10/05/12 08:55 PM Re: Should I use heavier weight oil? [Re: Gebo]
spasm3 Offline


Registered: 05/30/10
Posts: 5151
Loc: out there
A high mileage 5-30 first, then if that does not help , go up in weight to a 5w 40/10w 40.
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#2764234 - 10/05/12 09:15 PM Re: Should I use heavier weight oil? [Re: Gebo]
Gebo Offline


Registered: 09/18/02
Posts: 778
Loc: VA
OK. I'm gonna wait on some sort of consensus...Not gonna be clear winner like in the 1st presidential debate.
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'98 LEX LS400 220K
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'89 Prelude 225Kf
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'05 Lex LS430 70K
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#2764240 - 10/05/12 09:22 PM Re: Should I use heavier weight oil? [Re: Gebo]
Topo Offline


Registered: 12/02/11
Posts: 670
Loc: Norwalk, Ohio
If it's the valve seals causing the loss of oil, perhaps a high mileage oil would work. But if it's getting past the rings than a thicker oil would be more beneficial.
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#2764248 - 10/05/12 09:29 PM Re: Should I use heavier weight oil? [Re: Topo]
chubbs1 Offline


Registered: 06/09/10
Posts: 4574
Loc: Merritt Island FL, USA
Originally Posted By: Topo
If it's the valve seals causing the loss of oil, perhaps a high mileage oil would work. But if it's getting past the rings than a thicker oil would be more beneficial.


+1

Here you go, try a good HM oil like M1 HM. Valvoline ML is OK too but I think you should just try the better one off the bat. Give it a couple tries. If It does not do anything after 2 OCI's or you still have to add 2 qts at the 6k mile mark, switch over to a thicker oil like 10w40.
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#2764251 - 10/05/12 09:31 PM Re: Should I use heavier weight oil? [Re: Gebo]
Noey Offline


Registered: 10/29/10
Posts: 234
Loc: Ct., USA
What does Isuzu recommend? Don't change viscosity based only on mileage, nor would I recommend 'High mileage' oils...i think that's a lot of marketing hype. A qt. every 3k isn't significant at 277k, especialy when you've also got leaks.
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#2764261 - 10/05/12 09:36 PM Re: Should I use heavier weight oil? [Re: Gebo]
Garak Offline


Registered: 12/05/09
Posts: 13594
Loc: Regina, Saskatchewan, Canada
Perhaps try MaxLife 5w-30. It certainly slowed the leaks in the old F-150. I don't know how well it works with consumption per se, since it didn't burn oil, just leaked it like crazy. As chubbs1 mentioned, give it a couple OCIs at least, regardless of which one you choose. Additionally, I don't think there's a lot wrong with trying 10w-30 in your climate, either.
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#2764270 - 10/05/12 09:40 PM Re: Should I use heavier weight oil? [Re: Topo]
Gebo Offline


Registered: 09/18/02
Posts: 778
Loc: VA
Originally Posted By: Topo
If it's the valve seals causing the loss of oil, perhaps a high mileage oil would work. But if it's getting past the rings than a thicker oil would be more beneficial.


SOOO...maybe a HM thicker oil would do the trick???? It's not smoking on start up if that helps diagnosis.
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'98 LEX LS400 220K
'00 LEX GS300 155K
'02 4Runner 195K
'89 Prelude 225Kf
'08 Chevy Van 6.0 115K
'05 Lex LS430 70K
'09 Lex IS350 70K


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#2764276 - 10/05/12 09:44 PM Re: Should I use heavier weight oil? [Re: Noey]
ABerns Offline


Registered: 08/11/10
Posts: 423
Loc: Iowa
Originally Posted By: Noey
What does Isuzu recommend? Don't change viscosity based only on mileage, nor would I recommend 'High mileage' oils...i think that's a lot of marketing hype. A qt. every 3k isn't significant at 277k, especialy when you've also got leaks.


I'll place my vote for this. 1qt every 3k miles isn't a lot.

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#2764287 - 10/05/12 09:54 PM Re: Should I use heavier weight oil? [Re: Gebo]
Doog Offline


Registered: 10/24/11
Posts: 4451
Loc: Ohio
15w40 rotella
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#2764300 - 10/05/12 10:06 PM Re: Should I use heavier weight oil? [Re: Doog]
dparm Offline


Registered: 04/19/10
Posts: 12612
Loc: Chicago, IL
Originally Posted By: Doog
15w40 rotella


Way too thick.

Try a 5w30 HM first.
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#2764301 - 10/05/12 10:07 PM Re: Should I use heavier weight oil? [Re: Gebo]
BillyTheKid Offline


Registered: 10/12/11
Posts: 444
Loc: ny
I'd try maxlife first in a weight near what the car calls for. I'd vote the rotella as next try if that doesn't work. M1 hm is also an option but I think it's too pricey if you're going through oil, plus from what I've tried...the maxlife slowed my burning better and cost less.

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#2764302 - 10/05/12 10:07 PM Re: Should I use heavier weight oil? [Re: Gebo]
JimPghPA Offline


Registered: 08/22/09
Posts: 2949
Loc: Pittsburgh,PA U.S.A.
Try GC, and if that does not slow the consumption, go up in weight like T6 Rotella 5W-40, or maybe even Castrol 5W-50.
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#2764312 - 10/05/12 10:18 PM Re: Should I use heavier weight oil? [Re: Gebo]
toneydoc Offline


Registered: 12/16/11
Posts: 1273
Loc: War Eagle
dparm thinks like I do. Use a HM 5ww30 because winter is coming. If you have to add a quart or two, so what. At least you know you will have good oil in the motor. Next summer you could try a higher weight oil. Valvoline Nextgen 5w30 is my vote if you are counting. You can be a little green in the process also. cheers
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