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I am somewhat mystified as to the difference between Mobil 1 75W-90
(see http://www.mobil.com/USA-English/Lubes/PDS/GLXXENPVLMOMobil1SyntheticGearLubricant.asp )
and Mobile 1 LS 75W-90 (See http://www.mobil.com/USA-English/Lubes/PDS/GLXXENPVLMOMobil1_75W-90_SyntheticGearLubricant.asp )
Can anyone shed any light on the difference and which of these two products should I be using in the front and rear diffs. of my 2003HD D/A?
(see http://www.mobil.com/USA-English/Lubes/PDS/GLXXENPVLMOMobil1SyntheticGearLubricant.asp )
and Mobile 1 LS 75W-90 (See http://www.mobil.com/USA-English/Lubes/PDS/GLXXENPVLMOMobil1_75W-90_SyntheticGearLubricant.asp )
Can anyone shed any light on the difference and which of these two products should I be using in the front and rear diffs. of my 2003HD D/A?