03-30-2012, 04:06 PM | #1 |
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Bad oil
Some have talked about modern oil for old engines. I will try to post a picture that shows what happens with modern oil on a fresh reground cam with new valve springs. Within 1000 miles, two valves would loosen and need adjustment. The top of the lobes had gone away.
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03-30-2012, 04:48 PM | #2 |
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Re: Bad oil
thats why i keep saying never buy any oil with the red circle on the front that says for gasoline engines only, that oil is for new cars with roller tappets, it does not have the zink in it the flat tappet engines require, buy that oil and see the pic old don posted, fair warning lol
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03-30-2012, 07:08 PM | #3 |
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Re: Bad oil
The Motorcraft Diesel(Ford in a Ford) is supposed to contain more ZDDP than the new formula Rotella at about 1330 ppm I am running it in my 302, Since the 70's I always use Isky Cam lube for break in and no failures,however there has been talk of problems with faulty import lifters causing cam wear on several forums,ask before you buy.
Last edited by JeffB2; 03-31-2012 at 03:38 AM. |
03-30-2012, 07:46 PM | #4 |
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Re: Bad oil
And then there is old oil. I picked up some of these two varieties today at an estate sale. The RPM brand doesnt even have an API rating. The Valvoline is SC,SD,SE, CA, CB, CC. Standard Oil Co. of California, San Francisco, made the RPM.
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03-30-2012, 08:27 PM | #5 |
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Re: Bad oil
I've been using Wolfs Head 15W40 blend with a bottle of Lucas ZDDP for breaking in all new motors. After breakin, it's the same oil with half bottle of the Lucas. So far, so good.
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03-30-2012, 11:10 PM | #6 |
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Re: Bad oil
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03-31-2012, 12:14 AM | #7 |
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Re: Bad oil
fordy's
that's improper break-in after an engine rebuild or a camshaft change. you have to prime the oil pump and start engine up on first crank or two. camshaft is splash oiled thrown up from crankshaft. one of the last parts to get oil on a new engine start up. Have A Nice Day!
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03-31-2012, 01:26 AM | #8 |
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Re: Bad oil
What I have been doing the past several years is rotate Rotella T15-40 and pennzoil 10W-30 every other oilchange.
The strategy is too get the benefit of the zinc in Rotella, but then I dont want to sludge it up by using it all the time, so every other oilchange I switch to pennzoil as I would have more detergent action. My Y-block was last rebuilt in 1984, but did also do a valve-job back in 1992. I did also re-adjust the valves about 3 years ago and improved it a lot. She is still going strong though, 100% factory stock (no modern modifications). But now I am wondering if I should mix half and half of each type on every oil change. |
03-31-2012, 08:14 AM | #9 |
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Re: Bad oil
I alternate between 10/30 Valvoleen VR-1 racing oil and 10/40 conventional. 40 weight oil, either multiviscosity or straight, is supposed to still have the needed amounts of ZDDP, as does the 10/30 VR-1.
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03-31-2012, 09:03 AM | #10 |
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Re: Bad oil
The date on the picture says 2007, the cam was removed in 2000. I have used Rotella 15W40 since, because when I travel, it can be bought at any truck stop. I use a 160 thermostat to warm up the engine, and it has a PCV. The inside of the motor has a film of oil, but no sludge after all these years.
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03-31-2012, 09:41 AM | #11 |
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Re: Bad oil
Don,
That's good to know about the Rotella 15w40 as you said you can buy it any place when your traveling. Even wally world sells it,as do all Auto Zones and NAPA stores.
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03-31-2012, 02:45 PM | #12 |
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Re: Bad oil
Here is a chart that is helpful http://www.mobiloil.com/USA-English/...duct_Guide.pdf Now if you really want some detailed info READ all of this:http://www.turbodieselregister.com/TDR57_Oil.pdf notice the Rotella 15W40 falls into the bottom "Ho-Hum" category but the Rotella Synthetic is Good but there are many other options and some with very high ZDDP ratings that will surprise you so high that the need for any ZDDP additives would be unnecessary.
Last edited by JeffB2; 03-31-2012 at 03:03 PM. |
03-31-2012, 08:17 PM | #13 |
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Re: Bad oil
Wow, that data is amazing. They dont supply most of those around here but I could easily be using Valvoline premium Blue (Best), Pennzoil Long Life (best), Castrol GTX Diesel (satisfactory) and Motorcraft Superduty (satisfactory). And they are all better than Shell Rotella and cheaper too.
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04-01-2012, 12:01 AM | #14 |
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Re: Bad oil
Fordy's
one article said they've reduced the protective metals that 'lay on' to the wear surfaces. they said it's because a lot of the engines now have roller lifters. they say there's still additives in most oils. the Big Truck oil WOULD keep putting additives in, because truck engines will be last to get roller lifters. that camshaft still got flattened at break in though! Have A Nice Day!
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04-01-2012, 01:11 AM | #15 |
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Re: Bad oil
AutoZone (and probably others) has a 'new' Castrol synthetic 5W-50 oil that is labelled "specially formulated for classic cars" and on the back says it has extra zinc for flat tappet camshafts. It is on sale: Five qts. plus a K&N oil filter for $32.99. The filter had a regular price of $13.99.
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04-01-2012, 04:48 AM | #16 |
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Re: Bad oil
One thing about the link I posted if you read the entire long article it mentions that you don't want too high a detergent level in a gasoline powered car the TBN and Calcium are the detergents, in comparison the Delo 400 has a TBN of 7.82 and 1593 Calcium Rotella is 8.77 TBN and 2488 Calcium so the Delo would be a better choice.
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04-01-2012, 04:52 AM | #17 |
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Re: Bad oil
40Deluxe, that Castrol deal is a pretty good price and I will be checking it out.
Last Wolf'sHead 15w40 I got was $4 a quart, Lucas treatment $12 a pint. Not looking for 'cheap' but if it provides same protection it's a bargain. I usually use Motorcraft or Wix filters, both are around $6 each. |
04-01-2012, 09:20 AM | #18 |
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Re: Bad oil
that's a great article, just put shell rotella with a quart of rislone zinc additive in the y-block. This guy hates rotella, go figure? The stuff was on sale so I bought two more gallons. Thanks for sharing this article, Mark
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04-01-2012, 02:28 PM | #19 |
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Re: Bad oil
Fordy's
well ok, maybe there is something to this new oil/old oil stuff. here's International Harvester guys thread. http://www.binderplanet.com/forums/s...ad.php?t=80079 bottom line. Valvoline Racing Oil. case closed! Have A Nice Day!
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04-01-2012, 02:45 PM | #20 |
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Re: Bad oil
Fordy's
here's the VR1 page at Valvoline. http://www.valvoline.com/products/co...ng-motor-oil/6 first line says has 'zinc' whatever additive. the 'off road' Valvoline Racing is synthetic. no synthetic in my engines! Have A Nice Day!
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