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View Full Version : Oil Changes.... It's that time of the year again



zipper
09-11-2013, 12:09 PM
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.

CHACHI
09-11-2013, 01:17 PM
20w50.

Offers more film strength than a 40 at all temps and gets to the parts faster at cold start up.

My 2 cents.

Ken

Pismo
09-21-2013, 08:49 PM
Just put VR1 20-50 in my 96 502 and a wix racing filter. Seems to work, been using it for years.

Carl C
09-21-2013, 09:08 PM
Just put VR1 20-50 in my 96 502 and a wix racing filter. Seems to work, been using it for years.

Same combo that I use in Michigan.

joseph m. hahnl
09-22-2013, 09:01 AM
I'd say in your climate 20/50 would be better. :propeller:

As a side note we in the USA run 20/50 organic or 15/50 synthetic, as straight 40 is not really available off the Dept store shelf:doh:



http://images.oreillyauto.com/parts/img/medium/mob/m115w50qt.jpghttp://i.walmartimages.com/i/p/00/07/45/09/90/0007450990841_180X180.jpg