What Weight Oil

boardersdad wrote: TRBenj wrote: Valvoline VR1 20w50 or Mobil1 15w50. Are you guys running the dino or the synthetic? dino -- "Valvoline VR1 Racing Oil (VR1)", 20W-50 p/n VV211 synthetic -- "Valvoline Racing Synthetic (VR1) Motor Oil", 20W-50 p/n 679082.0 Both have 1400 ppm zinc and 1300 ppm phosphorus. Looks like the synthetic is about $2.50 more per quart.

Personally, I use the conventional VR1. If I want synthetic, I use the M1 15w50. I have been able to find the latter in the 5 qt jugs at Walmart recently for ~$25.

I guess the gpa could be weighted in certain categories. If that was the case then it could be possible if not then you guys need to check your math.
Thanks
Mike

Man north of the border can sure be a pain for some of this stuff.

Finally tracked down some VR 1 20w50 conventional at Napa auto parts for 7.59 a litre. Thats cheaper than the 11 bucks/ltr Lordco quoted me for the mobil 1.

Yes, I think most if not all NAPA and Carquest filters are made by Wix. But each one is made to the customer's specifications. I saw a youtube video comparing a Wix and Carquest filter, and the only difference for those specific models was in the number of pleats in the filter material.

Bri892001 wrote: boardersdad wrote: ... Mercruiser 4-Cycle 25W-40 Marine Engine Oil: 1500 ppm ZDDP Valvoline VR1 20W-50 Racing Oil: 1200-1300 ppm ZDDP Super Tech 15W-40 Universal Motor Oil: 1200 ppm ZDDP ... I'm waking a sleeping oil-thread dragon here, but does anyone run that Mercruiser oil? Where I live, there's more West Marines nearby that Walmarts or good auto parts stores. West Marine stocks the Mercruiser oil, so I can put my hands on that more easily than VR1 (which I'd probably have to ship). The Mercruiser looks like it has enough ZDDP, so would it be otherwise suitable?

Brian, I've used it for years in the Mercruiser 140 I/O. But since I made the post you quoted, I've found that the 1500 ppm number is old. Nowhere can I find anything official from Mercury Marine / Mercuiser / Quicksilver that gives the current zinc and phosphorus content. What I find are other people complaining that Merc won't print it any more. So the concern (conclusion?) is that they may have reduced the content.

I'm just tired of companies being too good to list the contents, and charging me up the ying yang for their mystery products.

Steve

p.s. "ying yang" is a technical marine term

Take a look,,good site.
http://www.shopthedude.com/index.cl

Lucas Oil Hot Rod and Classic Car oil 20w50


Thanks Peter.