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Two Questions about Lucas Oil Stabilizer #5084743 04/24/19 11:30 AM
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markhoff1022 Offline OP
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1. If I have low oil pressure at idle (low as in "check gauges" light comes on) but get about 35-40 psi at around 2000 rpm, would adding a quart of lucas to my next oil change help increase oil pressure at idle?

2. If I add lucas once, do I need to keep adding it every oil change? Is it something like when you start using it, you can never go back?

I purchased a 2000 Jeep Cherokee with the 4.0L in December. Only 109,000 miles. No ticking, clattering, or knocking. Past owner blew the head gasket and coolant leaked into the oil, wearing away some of the bearings. I asked a mechanic if I should up from 10w-30 to 10w-40, and he said 10w-30 with a quart of lucas would be a better option. I already changed the oil pressure sending unit, I have seafoam in the crankcase to help get sludge out of the oil pump, and the mechanical pressure test confirmed the gauge is reading correctly.

If the lucas doesn't work, I plan on installing a Melling High Volume oil pump, which I'm told worked wonders in similar situations (yes, i know volume does not equal pressure, and it may lead to other problems down the road, but 90% of the people who install them say they solve the oil pressure problem. Basically my back is to the wall right now- I can't even sit at a red light for 3 seconds without having to rev the engine to 1000 rpm's or so, and it only gets worse with the upcoming summer heat (I'll be in Montgomery this summer)). If anyone has any experience with these oil pumps, that advice would be greatly appreciated too.

Re: Two Questions about Lucas Oil Stabilizer [Re: markhoff1022] #5084751 04/24/19 11:35 AM
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rooflessVW Online Content
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Going up a grade is always preferable to Lucas Mucus. Fire your mechanic.


"Zed's dead baby, Zed's dead."
Re: Two Questions about Lucas Oil Stabilizer [Re: markhoff1022] #5084753 04/24/19 11:39 AM
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beanoil Offline
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X2 on new mechanic.
No Lucas.
Never.
Period.

15w40 in that engine and don't look back.
I doubt it gets cold enough in Alabama to require a 5w40, but if below 20 degrees, that would be option number 2.

Last edited by beanoil; 04/24/19 11:41 AM.
Re: Two Questions about Lucas Oil Stabilizer [Re: markhoff1022] #5084760 04/24/19 11:49 AM
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addyguy Offline
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In Alabama, 20W-50 would not be out of place in that engine for the summer.

Stick a can of 'Restore' in it to see if it helps.


2010 Kia Soul 2U - 2.0L I-4, auto; 148k 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] #5084761 04/24/19 11:50 AM
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racin4ds Offline
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Heck I wouldn't be afraid to put some 20W50 in an old 4.0! Thinking Valvoline VR1. The Seafoam in your oil now is thinning its viscosity extremely bad so that is a lot of your problem... No need for Lucas, save your money and just use a good, thick oil.


Just say NO to thin oils and M1!
05 F350 Powerstroke
05 Hyundai Tucson
08 Legacy GT
Re: Two Questions about Lucas Oil Stabilizer [Re: markhoff1022] #5084782 04/24/19 12:20 PM
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Audios Offline
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I agree, thicker oil to start. Lucas has raised oil pressure for me a few times in certain cars, but its usually only temporary as it thins out. We had a mini with 13 psi at idle, spec was 11 so it would flutter. Lucas brought it back to 22-25, but he got the light on again about 2500 miles later.


2002 VW Golf TDI-T5 10/30
2007 Mercedes GL320 CDI- M1 0/30 ESP
2005 BMW M3 BMW-Twin Power 10/60
2003 BMW M5-M1 15/50
1998 BMW M3/4/5-M1 10/40
Re: Two Questions about Lucas Oil Stabilizer [Re: markhoff1022] #5084784 04/24/19 12:22 PM
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ragtoplvr Offline
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What kind of engine. some have issues, that will only get worse and more expensive.

Rod

Re: Two Questions about Lucas Oil Stabilizer [Re: markhoff1022] #5084786 04/24/19 12:22 PM
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OVERKILL Offline
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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.


2019 RAM 1500 Sport - Mobil 1 EP 0w-20, FRAM Ultra
2016 Grand Cherokee SRT - Ravenol SSL 0w-40, FRAM Ultra
Re: Two Questions about Lucas Oil Stabilizer [Re: markhoff1022] #5084788 04/24/19 12:26 PM
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Chris142 Offline
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Pull the pan and roll in new bearings.


02 Wrangler Napa high milage 10w40
87 F250 Valvoline 15w40
07 fjcruiser Car lube plus 10w30
Z400 castrol T 10w40
Can am Maveric edge 5w40
57 case tractor Chevron sae30
Re: Two Questions about Lucas Oil Stabilizer [Re: markhoff1022] #5084791 04/24/19 12:29 PM
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burla Offline
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No to Licass x5, you mechanic is not giving you sound advice. Very limited times to use Lucas, and usually going up in weight is the better option. First, verify the gauge is correct and do a compresion test. Tune up idle speed and avoid idling at all cost. Your low oil pressure light in not coming on? Is it burning oil?

Re: Two Questions about Lucas Oil Stabilizer [Re: Chris142] #5084812 04/24/19 01:02 PM
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Lenny5160 Online Content
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Originally Posted by Chris142
Pull the pan and roll in new bearings.


That was my thought, as long as you mentioned changing the oil pump as an option. If you're pulling the pan anyway, why not roll in a set of bearings while you're in there?

Re: Two Questions about Lucas Oil Stabilizer [Re: markhoff1022] #5084904 04/24/19 02:23 PM
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skyactiv Offline
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Wife: 15' Audi A4 quattro 6 speed manual
Sold: 13' VW GTI 3 door 6 speed manual
Me: 18' Elantra Sport 6 speed manual


Re: Two Questions about Lucas Oil Stabilizer [Re: markhoff1022] #5084969 04/24/19 03:20 PM
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SirTanon Offline
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sky - Want to be truly disappointed? Click the 'YouTube' link in the bottom right and read the comments on that video. SOOOO many people rabidly jumping to the defense of Lucas in the comments. I guess there's that percentage of the population that you can never convince..


2013 Nissan Altima SV - 2.5 liter/CVT - 123,000mi
2014 Nissan Altima SL - 2.5 liter/CVT - 69,000mi
2010 Ford Fusion - 274k mi - SOLD
Re: Two Questions about Lucas Oil Stabilizer [Re: markhoff1022] #5085167 04/24/19 06:38 PM
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markhoff1022 Offline OP
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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!

Re: Two Questions about Lucas Oil Stabilizer [Re: markhoff1022] #5085172 04/24/19 06:41 PM
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demarpaint Offline
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If you want something good to "thicken" the oil up check out Schaffer's #132. At least you'll be pouring something decent into the sump, that might actually help a bit. It had a pretty good following here years ago.


God Bless Our Troops

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