View Full Version : Oil for Upcoming Winterzation

08-22-2013, 03:36 PM
Yes I know it's early to start thinking about winterization but I just got a flyer from AutoZone on the new RotellaT6 oil. It's $8 off a gallon and $40 off 5 gallons. We tend to do multiple boats around here so the 5 gallons would tend to go quick.

Anyway the T6 Rotella is only offered in 5w40 and is full synthetic. I'm thinking of moving this direction but thought I would throw it out here and see what others think. Here's a clipping on the performance as related to our beloved 15w40 of the same make.....

Shell Rotella® T6 provides extra protection against breakdown by heat and offers up to 70% better oxidation resistance, compared to conventional Shell Rotella® T3 15W-40 API CJ-4 oil.

Here's the link to the site with more information about the product.....


With the discount the cost is about the same. Thoughts?

08-22-2013, 03:41 PM
Should be ok for newer roller tappet motors if the weight is right. I was running in my 1995 - If you need ZDDP T6 has 1260/1147 zinc/phosphorous. The synthetic base stock of all synthetic oils gives you better temperature and oxidation protection.... not to start an oil discussion.

Not a bad choice for oil in any way IMO.

09-22-2014, 12:33 AM
something to read for the off season ;)


09-22-2014, 11:42 AM
My only issue with the more expensive synthetic motor oils is the short amount of time in between oil changes. If I'm not going to use it longer then I can't justify the expense. If I wasn't changing oil every season then it would make more sense to me.

09-22-2014, 12:19 PM
I just like the sheer strength of synth over dino

besides we are boat owners ;) - we have lots of money right?

09-22-2014, 02:24 PM
because we are boat owner we don't have allot of extra money ;)

If it meets the motor requirements you don't need more than that... it is oil... I have a 1954 AllisChalmers that still has the original un-rebuilt 45 hp 4 cylinder motor 6volt positive ground... and it has plowed, bailed, threshed (when threshing was still in style), spread manure, for 30 hard hard years... it used oil from the co-op and a flimsy filter IMO, and still starts as good as any new car.... doesn't use a drop of oil from year to year... :cool: