I have started towing my utility trailer with my pressure washing equipment on a semi-regular basis. 5x10 trailer with about 1000lbs. of equipment. I was thinking of running the thicker gear oil in the rear, but I am a little worried if the weather dips down in the single digits. It doesnt happen too often around here, but it does from time to time. Also, I dont have my owners manual that may reccommend a different weight.

 

i run vaviline 75w-140 in the rear of mine. Ive had rear end probs in the past and feel better with a bit thicker oil back there expecially when im towing.

 

I used 75-90 synthetic when I was towing my 3000# trailer. Flows good cold, too. They make the 80-140 in synthetic also.

 

OK, I found my owners manual, and it states that straight 90W is the thickest recommded. I think I'll upgrade to 75w-90 synthetic and call it a day.

 

If I remember the oil weight designations properly, the first number in a multi-weight oil is the actual base viscosity of the oil. The second number is how it 'acts' due to additives in the base weight oil -- without having to have the base oil be so thick.

If 90 weight is the highest viscosity recommended, then I would interpret it to mean you could run 90w-130, for example , with no problems.

Someone please correct me if I'm wrong. I'm old and my braincells don't connect like they used to .

Mike in AR

 

Redline heavy shockproof. Film thickness of 75W250, with friction of 75W90.

http://www.redlineoil.com/products_g...61&subcatID=20