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

Messages
214
Location
Eastern North Carolina
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
 
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JAG

Messages
5,320
Location
Fredericksburg, VA
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.
 

gonesurfing

Thread starter
Messages
214
Location
Eastern North Carolina
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.
 
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Messages
2,505
Location
NJ
UOA looks good, and I would extend the interval, but did you catch any hurricane swells? smile OT 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

Thread starter
Messages
214
Location
Eastern North Carolina
OT 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.
 
Messages
750
Location
Northern Michigan
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.
 
Messages
712
Location
Wenatchee, W.A.
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.
 
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