Prefered transmission oil for 89 Charokee?

Bill, Thanks for the reply. I looked this morning and can see I have a two piece case bolted top and bottom. So that means I have the "Light duty BA 10/5" French one. I know the French don't have a good reputation for making cars. But I also know the Gleason differential was bought by a Frenchman from a Russian co. The owners manual calls for GL5 75W-90. My question is should I use dino or synthetic oil. Since using shell rotella synthetic 5w40 in my jetta tdi I've started using it in my other vw cars with very good results. Also vw's vanagons that have a weak slider gear for third (as I recall) and it cracks, work better with redline synthetic. Any thoughts on synthetic for my 89 4L XJ and if so what brands?

Thanks Joe

I should add I use the Rotella in the engines of my vw's! Joe

Oh, so synthetic oils are petroleum oils and petroleum oils are synthetic oils, eh?

Now that makes sense. lol

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Umm....seems someone here has been doing that?

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-- compare ANALYTIC 3 : characterized by frequent and systematic use of >

The companies that make the crap are doing that or have you totally missed that point in all your posts?

'Legally' they can call petroleum oil 'synthetic'.

Don't complain to us about it, we agree with you.

Mike

SnThetcOil wrote:

This argument has come up before and has even gone to court. It was determined that a dino oil modified in such a way could legally be called synthetic. The brand was Castrol.

JoBo

Right, and by their extremely loose definition, all synthetic oils are petroleum oils and all petroleum oils are synthetic oils, of course! lol :-)

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