This is the top end of the 4.0l in a 92 XJ. The owner's defense was that she was using the correct viscosity.... It is a bit hard to tell, but that oil is the consistency of pudding when it is not quite set-up.

 

Hey looks like they forgot to change it ,or they kept changing brands. Thats also what happens when you by whats on sale all the time (differant brands)

 

No oil should look like THAT

 

Wow, never seen one that bad.

 

Damn did it run

 

That pic/mess has 0% to do with viscosity, 100% to do with owner neglect. Looks like SFB syndrome to me.

 

HEHE trying to sell more AMSOIL.

 

One of the reasons I bid on our XJ at auction. Neglect (as in above pic), is pretty easy to check for. Good maintenance is easy to spot also.

 

Never heard of using different brands doing THAT to an engine. That is someone who changes it every 3 YEARS... Using different brands is better than 30K oil change increments.

 

Well yeah Duhhh changing oil is better than not. Yes as far as I know was told me, that when you keep changing brands it can build sludge.Just cause you haven't heard of it means it doesn't happen huh,I've also heard it on an old castrol commerical on Tv boy oh boy Castrol must be wrong hmmmm.So if I have one nut bigger than the other and you never heard of that its not true cool. Sorry to put ya on the spot but Really come on maybe rephrase what you said

 

Had a neighbor that was a chemical engineer (PhD) with Exxon/Mobil (now) for over 40 years. FWIW - his recommendation was "rotate between the 4-5 top/major oil brands when changing oil/filter - stay with the same viscosity but change/rotate brands - the next brand will clean/remove the previous brands detergents left behind when changing oil". Again, FWIW but from a very smart/educated man, may he RIP.

 

AYE RIP/// but dont just grab this one then opps need a bit of oil go grab that one or change the oil with 5 differant kinds.

 

So what are the top 5 brands out on the market. if i ask 5 different peps, im sure i would get 5 diff answers, and im talking mechanics, parts pro's, engineers, and profesional racers.

 

Yup... I offered to try some out in my jeep but never got a response...

 

Guess the point got missed........it was that using different brands wouldn't cause problems and test results proved it and also kept engines clean. Most everybody can name 5 major brands of motor oil, probably twice that.