comanche12 Posted September 16, 2010 Share Posted September 16, 2010 hey guys I'm been try to research for which gear oil weight to put in my front d44 and rear 9" ford? the alldata info said use 75w-90 as standard for oem gear oil and is the brand coastal good? because they r great cheap price for 1 gallon ($11) edit: extra infos... there no lSD/locker added and its 4.10 gear ratio both front and rear Quote Link to comment Share on other sites More sharing options...
comanche12 Posted September 17, 2010 Author Share Posted September 17, 2010 BUMP...! Quote Link to comment Share on other sites More sharing options...
whowey Posted September 17, 2010 Share Posted September 17, 2010 Locker no locker???? Towing or hauling with the truck or no??? To give you an accurate recommendation the intended usage is needed. Quote Link to comment Share on other sites More sharing options...
comanche12 Posted September 17, 2010 Author Share Posted September 17, 2010 Locker no locker???? Towing or hauling with the truck or no??? To give you an accurate recommendation the intended usage is needed. um i already gave the info on first post. quoted:from first post "edit: extra infos... there no lSD/locker added and its 4.10 gear ratio both front and rear" Quote Link to comment Share on other sites More sharing options...
wallisek Posted September 17, 2010 Share Posted September 17, 2010 If the truck is going to see regular street use I'd go with a 90w oil. If you are going to tow with it, I'd go with a 140w oil. Regardless, go with synthetics and your gears will be much happier. :thumbsup: A bit more expensive but it's not like you are changing the diff oil every 5k. Quote Link to comment Share on other sites More sharing options...
comanche12 Posted September 17, 2010 Author Share Posted September 17, 2010 knew it and thank you! ill go with 90 Quote Link to comment Share on other sites More sharing options...
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