1999 Jeep Cherokee, Mobil 1 HM 10W-30 3k miles

[gonesurfing]

First sample. Oil is changed annually with a NAPA gold filter. Mileage is low, but this Jeep sees a lot of beach driving. Very pleased with results. I've chosen this oil specifically for it's A3/B3 ACEA rating. Miles on oil 3,025 Miles on vehicle 125,636

Code:

ALUMINUM        3
CHROMIUM        3        
IRON            12       
COPPER          7       
LEAD            5       
TIN             2        
MOLYBDENUM      70      
NICKEL          1      
MANGANESE       0        
SILVER          0        
TITANIUM        0       
POTASSIUM       3       
BORON           104      
SILICON         10        
SODIUM          8      
CALCIUM         2445    
MAGNESIUM       18     
PHOSPHORUS      640     
ZINC            828    
BARIUM          0
     
INSOLUBLES      0.2      
WATER           0         
FLASHPOINT ºF   395    
SUS VIS 210ºF   63.0     
cSt @ 212ºF     11.05
TBN             7.0
Fuel            <0.5

 

[dparm]

Could've gone to 5 or 6k easily.

 

[Eddie]

Looks very good

 

[JAG]

With chromium around triple of what's typical and that it gets driven on the beach, some sand probably has gotten into the combustion chambers and caused extra piston ring wear.

 

[Artem]

That's a butt load of TBN left in that oil. Too bad you dumped the oil early.

 

[crazyoildude]

how does your engine sound in your jeep i always hear those strait 6 engines ticking and making all sorts of noises but they seem to run to 300,000

 

[addyguy]

Looks real good to me.

 

[gonesurfing]

Originally Posted By: crazyoildude

how does your engine sound in your jeep i always hear those strait 6 engines ticking and making all sorts of noises but they seem to run to 300,000

It has what sounds like a rod knock or piston slap when hot, but it's had that noise for 60,000 miles and hasn't gotten any worse. I think the Mobil 1 HM has helped some, as the Havoline I used to run was pretty thin. When the engine is really working hard on the beach is when the knocking was most noticable and I haven't heard it lately.

 

[bluesubie]

UOA looks good, and I would extend the interval, but did you catch any hurricane swells? Timing was bad for me with NJ having the best winds when I was at work. Long Island had way more offshore days than NJ and was less flat during the summer. I should move. -Dennis

 

[gonesurfing]

Timing was bad for me with NJ having the best winds when I was at work. Long Island had way more offshore days than NJ and was less flat during the summer. I should move. [/quote] We had a few decent swells, but not as good as the last two years. Katia was at the best and she gave us one day of head high+ glass that just happened to fall on a Thursday. Irene knocked out our power, blew over a few trees, and we got a couple hours of surf on the tail end. The best waves I personally caught were with Ophelia on the southern Outer Banks. 8 foot faces and thumping.

 

[ltslimjim]

You've inspired me to try this oil the next time I buy another HM oil. Is the 5w-30 Mobil 1 HM also A3/B3 ACEA rated?

 

[Colt45ws]

IIRC, it is not.

 

[FZ1]

Looks good. You did it right. 1 year max oci.

 

[oilmaven]

I was considering running this in my 1996 Honda Accord w/104,000 miles. I used it in my PT Cruiser (miss that car)and it returned some good UOA's. I ran it year round in sub-zero temps and never had a problem starting the "Cruiser". Is there any advantage to the Mobil 1 5W30 HM? I remember reading that the 10W30 had a LOWER pour point than the 5W30...better specs. too.

 

[bluesubie]

The 5W-30 has a lower pour point, higher Viscosity Index, lower HTHS, and lower kinematic viscosity. I guess the advantage would be possibly slightly better fuel economy and easier starts in winter. http://www.mobil.com/USA-English/Lubes/PDS/NAXXENPVLMOMobil_1_High_Mileage_Oil.aspx The ZDDP levels are the same.

 

[84zmyfavorite]

Right on. Ive got 6 Cherokees, 4 of which have the 4.0 Inline 6. I recently rebuilt my 99s 4.0, with only 139,??? miles on it at time of teardown. The ticking I was hearing was a wrist pin wearing a egg shaped hole in piston #2. I drove for more than 7,000 miles with this motor making that noise, and finally had enough. Could have shattered the piston on one of my Redline thrashings, or on a long trip. The motor went together very well, I used Sealed Power pistons and Hastings rings, after a Good, Smooth ball hone job, 24 hours of cylinder head porting and smoothing, Intake machining and throttle body boring. Mobil 1 HIGH Mileage 10w-30 and 10w-40 are two of my Favorites for Jeep 4.0s.