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climbinggod
02-09-2008, 12:21 PM
Hi there,

I was wondering what spec of motor oil you would recommend for my 351 HO engine. I have the boat in southern Canada where the average summer temp is around 70 F if that matters.

Guess I know what sort of oil to get now, just wondering 20W50, 10w30, or something else????

east tx skier
02-09-2008, 12:37 PM
I would suggest an oil that still has the additive ZDDP in it due to your engine having a flat tappet cam. I'm using Valvoline VR1 20W50, though my climate in the summer is significantly different than yours.

climbinggod
02-09-2008, 12:41 PM
so the higher the W factor the warmer the climate (eg. 20W50) 50 being the wieight?? So for a cooler climate say W40??

east tx skier
02-09-2008, 03:18 PM
I'm not sure that's exactly correct. I know 20W50 will work in Texas though I was using 15W40 before Rotella ditched the zinc.

88 PS190
02-09-2008, 03:37 PM
W implies a multiweight oil that performs differently based on the temp.

A 20W50 oil is a 20 weight oil when cold, and as the oil warms up polymers uncoil and stabilize increasing the oil viscosity to seem like a 50 weight oil.

The Valvoline ZR-1 is a good oil, though on the expensive end. Do you have an engine manual for your boat? They normally list proper oil over temperature ranges you expect to operate over. I would follow those suggestions.

88 PS190
02-09-2008, 03:47 PM
Other oils with ZDDP

Chevron Delo
Redline Synthetics
Mobile 1 synthetic I believe

I have been using Delo 20W50 in my Airhead which they are known to need the ZDDP, just the way that many British cars, your boat, and many many engines do.

Always fun to learn that oil companies have improved their oils to not work well eh?

Laurel_Lake_Skier
02-09-2008, 05:26 PM
Where do you get the Chevron Delo 20W50? Although I haven't looked for it, it's not something I ever remember seeing anywhere.

TRBenj
02-09-2008, 05:26 PM
Other oils with ZDDP

Chevron Delo
Redline Synthetics
Mobile 1 synthetic I believe

I have been using Delo 20W50 in my Airhead which they are known to need the ZDDP, just the way that many British cars, your boat, and many many engines do.

Always fun to learn that oil companies have improved their oils to not work well eh?
Are you sure that Delo still has the ZDDP? Shell removed it from their Rotella multiweights (15w40) in order to comply with the particulate filters being installed on the new diesels. I would think Chevron would follow suit as well. The last time I checked, it made no reference to zinc or ZDDP on the Delo bottle, and it complies with the same API standard as Rotella. Something to look into.

Valvoline VR1 isnt that expensive here- I can find it under $3/qt. Thats quite a bit cheaper than Mobil1.

Personally, I ran 20w50 VR1 here in New England last summer. I saw no change in oil pressure from the 15w40 I used the year before. Nonetheless, Im trying a mix of 20w50 and 10w30 (both VR1) for the start of this season.

88 PS190
02-09-2008, 06:34 PM
I did once find a case of VR-1 in a discount store for around 3$/qt, I cannot find that as reliably at the local stores.

The Delo I have is in a 5 gallon bucket and isn't the new stuff.
When that runs out the bike will have to move to a different oil, I am thinking it will slide over to Spectro golden (.15%).

With the old trucks we have been using Kendall GT-1 which is .16% zinc.

The VR-1 is .2% zinc I believe, which is a pretty high value. The new standard is below .1% so I feel .15% is about the minimum I would purchase.

For the cost the kendall seems an attractive choice. There is also kendall race oil sold as Brad Penn, no personal usage of that.

The other thing I have been seeing is that the VR1 has a very good package of acid neutralizers, which in a marine engine is likely going to be an advantage to combat moisture in the oil. And that is likely going to be a good choice if you can find it.

In our I/O I have had great luck with the MerCruiser Marine 25-40 as far as clean running, no smoke at start up etc. Which has me as a believer of that, but I do not know if it has ZDDP and its not available in a 20-50

TMCNo1
02-09-2008, 06:59 PM
Are you sure that Delo still has the ZDDP? Shell removed it from their Rotella multiweights (15w40) in order to comply with the particulate filters being installed on the new diesels. I would think Chevron would follow suit as well. The last time I checked, it made no reference to zinc or ZDDP on the Delo bottle, and it complies with the same API standard as Rotella. Something to look into.

Valvoline VR1 isnt that expensive here- I can find it under $3/qt. Thats quite a bit cheaper than Mobil1.

Personally, I ran 20w50 VR1 here in New England last summer. I saw no change in oil pressure from the 15w40 I used the year before. Nonetheless, Im trying a mix of 20w50 and 10w30 (both VR1) for the start of this season.


I run 40wt. Valvoline VR-1 Racing Oil and get it from my local Valvoline Quick Lube shop for $28 case of 12 + tax. They just order it from their local Valvoline distributor when they order their supplies once a week!

east tx skier
02-09-2008, 09:32 PM
I did once find a case of VR-1 in a discount store for around 3$/qt, I cannot find that as reliably at the local stores.


My local Auto Zone had it for around $2.50/qt when I got it.

stuartmcnair
02-09-2008, 10:23 PM
Where do you get the Chevron Delo 20W50? Although I haven't looked for it, it's not something I ever remember seeing anywhere.

Sam's carries it...

I use the VR-1 40wt that someone on here recommended, can't remember who but I think he gets a kickback on it.

climbinggod
02-12-2008, 06:46 PM
I can't seem to find any Valvoline race oil here in Calgary, Alberta. I saw something that someone mentioned something about using diesel engine oil. Does diesel engine have the extra metals that my 351 HO engine needs??

Could I use any 15W40 diesel engine oil??

Jim@BAWS
02-12-2008, 07:35 PM
A good quality 20/50 weight Penzoil or Valvoline is just fine

TMCNo1
02-12-2008, 07:37 PM
I can't seem to find any Valvoline race oil here in Calgary, Alberta. I saw something that someone mentioned something about using diesel engine oil. Does diesel engine have the extra metals that my 351 HO engine needs??

Could I use any 15W40 diesel engine oil??


Just as a example, Jegs has it, http://www.jegs.com/webapp/wcs/stores/servlet/KeywordSearchCmd?storeId=10001&Ntt=949&Ntx=mode%2Bmatchall&N=0&Ntk=brand&langId=-1&catalogId=10002and should be able to ship it to you in less time than some local auto parts and Quick Lubes can get it from a distrubutor. Jegs is pricey though. I pay around $28 + tax for a 12 qt. case.
Google, "Valvoline Racing Oil" and you'll find it most everywhere.


Try www.local.com (http://www.local.com) from your computer, insert "Valvoline Oil" and your location!

climbinggod
02-12-2008, 10:21 PM
Found this interesting additive on ebay

http://cgi.ebay.com/ebaymotors/6-ZddPlus-ZDDP-Engine-Oil-Additive-Zinc-and-Phosphorus_W0QQitemZ170191126097QQcmdZViewItem?has h=item170191126097

88 PS190
02-13-2008, 12:09 AM
Found this interesting additive on ebay

http://cgi.ebay.com/ebaymotors/6-ZddPlus-ZDDP-Engine-Oil-Additive-Zinc-and-Phosphorus_W0QQitemZ170191126097QQcmdZViewItem?has h=item170191126097

don't know if I'd trust that personally.

Simply because they say add it to your oil with a change 4 oz/change.

Well what about a bike that takes 2 qts? or a tractor that takes a few gallons.

I'd rather have good consistant %'s always.

I did find a company selling oil specifically for classic cars the other day.

drbesvold1
02-13-2008, 12:23 AM
amsoil has some great oil as well check there site out AMSOIL - Synthetic Oil, Motor and Engine Oil, Lubricants, Air Filters, Oil Filters and Greases (http://www.amsoil.com/)

JohnnyB
02-13-2008, 06:06 PM
I ran AMSOIL 15w40 Marine in my 351HO. 700+ total hours as that's what the previous owner ran, too.

lanier92prostar
02-14-2008, 11:41 AM
Just had the oil changed in my truck.!st oil change since they changed the formula for HD oil. Difference in cost: 35 dollars!!. I am going to start changing the oil myself from now on.

drbesvold1
02-14-2008, 11:47 AM
can you put synthitic oil in a mc 190 351 is the question?

lanier92prostar
02-14-2008, 12:11 PM
I know, but I couldn't find any of the other oil threads to vent. I don't put synthetic in mine, but I have an older 190. I use valvoline 10W 40 and it has worked fine for me for 16 years. the relavance of my vent was that the oil without ZDDP is way more expensive. I guess this was the first I have noticed the HD oil without ZDDP. Sorry for the threadjack.