zipper
09-11-2013, 11:09 AM
Have a few quick questions aimed at the oil guru's.
First off... I do my boating in Ont Canada & only in the summer months.
I have a 1999 22' donzi classic with a 502, and a 1991 31' cruiser style of boat with a pair of 454's.
I have been using 40 wt Valvoline racing oil in both boats for a number of years with no ill effects. I think the only reason I was using them was for the high content of the zinc additive.
I have access to both Valvoline straight 40 wt racing oil & also Valvoline 20w50 racing oil with both having that same zinc additive I wanted.
My question...... Which of those 2 oils listed above would be the more preferable oil to use considering my location, age of the boats, etc.
Any replies would be greatly appreciated.
First off... I do my boating in Ont Canada & only in the summer months.
I have a 1999 22' donzi classic with a 502, and a 1991 31' cruiser style of boat with a pair of 454's.
I have been using 40 wt Valvoline racing oil in both boats for a number of years with no ill effects. I think the only reason I was using them was for the high content of the zinc additive.
I have access to both Valvoline straight 40 wt racing oil & also Valvoline 20w50 racing oil with both having that same zinc additive I wanted.
My question...... Which of those 2 oils listed above would be the more preferable oil to use considering my location, age of the boats, etc.
Any replies would be greatly appreciated.