View Full Version : what oil for my 91 351 and powerslot??
09-10-2006, 10:52 PM
can I use Pennzoil Heavy Duty Deisel and Gas Oil in my 91 351W?
Also, can I use DexIII in my 1.5:1 powerslot?
09-11-2006, 05:27 PM
09-11-2006, 05:36 PM
I use a 15/40 diesel rated oil in my boat and have had no problems. I have the 1:1 tranny and dexron III is fine in it. I cannot say for sure about the powerslot though.
92 190 PS
09-11-2006, 05:39 PM
Mobile 1 15W50 synthetic in my 92 351...I also have 1:1 and use dextron III....
09-11-2006, 05:42 PM
I use Rotella T 15w 40 and Dexron III. Used the same in my '88.
and I use VR1 20/50 racing oil in mine, Dex III should be fine, I ran it in my 91 slot and never had an issue and that boat was always on the lake at tournaments, test rides - promo boat.
09-11-2006, 06:01 PM
where can I get rotella or VR1?
is desiel and heavy duty gas oil bad to use?
09-12-2006, 03:47 PM
09-12-2006, 04:13 PM
Valvoline VR1 40wt. Racing Oil, part # 229 for 17 years ['89 PS190, 351W] and running as strong as new, 446 hours and has never used any oil between 50 hour oil changes. Available by order at any AutoZone, Advance, Local Valvoline Distributor or at my local Valvoline Quick Lube, @ $2.41 a quart + tax by the case of 12. Cheapest was the Valvoline Quick Lube! Probably higher now because of High Oil prices, but I bought the case of 12 last October after Katrina?
09-12-2006, 04:15 PM
where can i buy that?
09-13-2006, 11:40 PM
09-14-2006, 09:41 AM
Are you asking about Valvoline VR1 Racing Oil? If so, see my post #9, this thread. Just to add to it, ANYONE who sells Valvoline Oil can order it for you, but in my case, I shopped around for the best price during the dramatic oil price increases last fall.
09-14-2006, 11:34 AM
PM bigmac, he knows more about oil then anyone I've ever talked to.