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Re: Two Questions about Lucas Oil Stabilizer [Re: markhoff1022] #5085244 04/24/19 08:23 PM
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Warstud Offline
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Don't people realize as an engine wears.....your oil pressure drops.

Re: Two Questions about Lucas Oil Stabilizer [Re: markhoff1022] #5085245 04/24/19 08:23 PM
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spk2000 Offline
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Synthetic or conventional oil both will work fine. Skip the Lucas. Return it. Definitely go heavier 20W50 if possible. Engine will do fine with it in your region. Hopefully the tornadoes don't break out tonight down there. I used to live in Birmingham and tornado season was interesting. Amazing how everyone went on like nothing was going on during a tornado siren and how quick cleanup of downed tress would be. Next morning couldn't tell anything happened. Here it would take a week or 2 to get that mess cleaned up. It snowed an inch when I lived there though and city was closed down for a day.


96 Grand Marquis 203,000 mi
01 Sable LS Wagon 163,000 mi
02 Montero 191,000 mi
03 Sable LS Sedan 73,000 mi
Re: Two Questions about Lucas Oil Stabilizer [Re: markhoff1022] #5085305 04/24/19 09:16 PM
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Dinoburner Offline
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20/50 conventional with 3000 mi OCI unless you have rod knock on cold startup in which case new bearings including mains before crank gets hammered.


77 Chev stepside 454 Casteroil syn
95 GMC 4wd mobil syn
2016 Equinox LTZ V6 dealer
Kubota L5030 T6
Re: Two Questions about Lucas Oil Stabilizer [Re: markhoff1022] #5085319 04/24/19 09:31 PM
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RDY4WAR Offline
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Originally Posted by markhoff1022
Thanks for all the advice!

I already purchased valvoline 10w-40 synthetic blend, a 5 qt jug and a 1 qt bottle. Since some are saying to up it to even 20w-50, could I put in the 5 qt jug of 10w-40 and one quart of a 20w-50? It probably won't even make a difference but whatever. Does it matter whether the 20w-50 is conventional or synthetic? I didn't have much selection at my auto parts store so I don't know what they'd have. I can then save the one quart of 10w-40 and keep it in the trunk for emergencies, fill ups, etc.

Also, as you can tell I'm quite new to working on cars, so if I get the bearings replaced, I would most likely have the mechanic do it for me. Is there a time/price estimate for a job like this?

Thanks in advance!


Use the Valvoline 10w-40. Check your oil pressure, and observe the trend. If it still appears to be low, go with 20w-50 on the next oil change. I don't like running a thicker oil than necessary.

I can't comment on the cost for the mechanic to change the bearings as I've done all of my own work for the last 15 years.

I also agree with everyone else. Avoid Lucas Oil Stabilizer.


"He who is without oil, shall throw the first rod." - Compressions 9:1
Re: Two Questions about Lucas Oil Stabilizer [Re: markhoff1022] #5085388 04/24/19 10:53 PM
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thescreensavers Offline
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OP have you verified your oil pressure with an actual gauge? The cluster is not accurate. My ,97 XJ reads 10psi but actually is 25psi, spec iirc is 13+ warm idle

Last edited by thescreensavers; 04/24/19 10:53 PM.

2017 Camaro SS 1LE (Motul 8100 X-clean 5W40)
1997 Jeep XJ 4x4 (15W40 HDEO Maxlife)
Re: Two Questions about Lucas Oil Stabilizer [Re: OVERKILL] #5085671 04/25/19 08:40 AM
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StevieC Offline
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Originally Posted by thescreensavers
OP have you verified your oil pressure with an actual gauge? The cluster is not accurate. My ,97 XJ reads 10psi but actually is 25psi, spec iirc is 13+ warm idle

^^ This first.

Then this vv
Originally Posted by OVERKILL
As others have noted:
- Say no to Lucas, it's super heavy Group I brightstock garbage with no additives other than a tackifier to make it "cling". Great for chainsaw bar oil, useless in an engine and may actually cause aeration.

- The Seafoam (stoddard solvent) is thinning your oil, which is the opposite of what you want to be doing in limping this engine along

- I'd run 15w-40 or 20w-50 as stated.

Keep in mind, none of this FIXES the problem. Neither will an HV oil pump. If your bearings our worn out of spec, you need a bottom-end overhaul. The best you can hope to do is limp it along until you can afford to do so.


'18 Caravan - 40k KM - AMSOIL SS 0w20, Fram Ultra, TC-W3 500:1
'06 Santa Fe - 535k KM (Retired)

There is no such thing as "lifetime" fluids! mad
Re: Two Questions about Lucas Oil Stabilizer [Re: Chris142] #5085978 04/25/19 01:50 PM
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Originally Posted by Chris142
Pull the pan and roll in new bearings.

^This here^. Not hard to do. The 4.0 is a tough engine. No to the Lucas.


I can't prevent getting old but I REFUSE to grow up.
2010 Mountaineer 4.0
2002 Jeep Wrangler TJ 4.0
Re: Two Questions about Lucas Oil Stabilizer [Re: thescreensavers] #5087222 04/26/19 01:54 PM
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Dieselman77 Offline
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Originally Posted by thescreensavers
OP have you verified your oil pressure with an actual gauge? The cluster is not accurate. My ,97 XJ reads 10psi but actually is 25psi, spec iirc is 13+ warm idle

X3. Verify first.


It is better to keep your mouth closed and let people think you are a fool than to open it and remove all doubt.
--Mark Twain


Re: Two Questions about Lucas Oil Stabilizer [Re: markhoff1022] #5087316 04/26/19 03:27 PM
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addyguy Offline
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Put in the 10W-40, and if it doesn't give you enough oil pressure, put a bottle of STP oil treatment in with it.

It does have some AW additives, and will bring the oil up to a 50-weight without having to dump perfectly good fill of oil.

You can add a pint of STP to a full pan of oil without over-filling it too much.


2010 Kia Soul 2U - 2.0L I-4, auto; 145k miles.
Castrol GTX HM 5W-30, STP blue bottle; Fram TG 9688.

2009 Pontiac G5 - 2.2 I-4, auto, 121k miles.
Oil/filter TBD
Re: Two Questions about Lucas Oil Stabilizer [Re: markhoff1022] #5095351 05/04/19 01:25 AM
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gfh77665 Offline
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Avoid Lucas!!!

20w-50 every day of the week and twice on Sundays.

Re: Two Questions about Lucas Oil Stabilizer [Re: markhoff1022] #5095870 05/04/19 07:34 PM
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jakewells Offline
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lucas is good for noisy gear boxes or linkages but i would NOT use it in any engine.


1996 Chevy 1500 W/T 4.3 V6.
Mobil 1 HM 10W30 Fram XG3980

A few old lawn boys.

Re: Two Questions about Lucas Oil Stabilizer [Re: markhoff1022] #5103787 05/12/19 09:19 PM
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JeepWJ19 Offline
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My Jeep's 4.0 likes M1 HM 10w40. Has good HTHS if you want thick.


2002 Jeep WJ 4.0 | Mobil 1 HM 5w30 |
TG8A | 2.5" lift | 148k miles

Software Engineer :]
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