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Jeep Wrangler JK
JK General Discussion
Yukon gears: increase viscosity when towing?
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<blockquote data-quote="72c10" data-source="post: 449266" data-attributes="member: 19352"><p>Greetings all! I just had a thought and I emailed Yukon gears for their thoughts. I didn't get a straight answer.</p><p></p><p>I had 4.56 Yukon gears installed about 8 months ago. We bought a 1400lb/1700lb loaded pop up camper that I've hauled twice since we bought it. These 4.56 gears pull awesome w/ 33's. </p><p></p><p>My question that dawned on me last night. Should I put an 85/140w gear oil in the rear diff? I'm saying 85/140 because Yukon states to use conventional 80/90 in their gears. I emailed them with the question/situation and the response was "Weight / viscosity is dependent on load / heat 85/140 wont cause any harm, other than being thicker and using more energy to churn thru.". </p><p></p><p>Maybe I'm weird and too inquisitive, but I didn't feel he/they answered my question of what they recommend if I towed. Am I overthinking this diff oil weight subject? Should I leave the 80/90w conventional that's in there? </p><p></p><p>I hope all of you are enjoying your summer and your Jeeps!</p></blockquote><p></p>
[QUOTE="72c10, post: 449266, member: 19352"] Greetings all! I just had a thought and I emailed Yukon gears for their thoughts. I didn't get a straight answer. I had 4.56 Yukon gears installed about 8 months ago. We bought a 1400lb/1700lb loaded pop up camper that I've hauled twice since we bought it. These 4.56 gears pull awesome w/ 33's. My question that dawned on me last night. Should I put an 85/140w gear oil in the rear diff? I'm saying 85/140 because Yukon states to use conventional 80/90 in their gears. I emailed them with the question/situation and the response was "Weight / viscosity is dependent on load / heat 85/140 wont cause any harm, other than being thicker and using more energy to churn thru.". Maybe I'm weird and too inquisitive, but I didn't feel he/they answered my question of what they recommend if I towed. Am I overthinking this diff oil weight subject? Should I leave the 80/90w conventional that's in there? I hope all of you are enjoying your summer and your Jeeps! [/QUOTE]
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Jeep Wrangler JK
JK General Discussion
Yukon gears: increase viscosity when towing?
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