Motor oil info

[Belair62]

Sully...I found this on another site I visit

Brand VI Flash Pour %ash %zinc
20W-50
AMSOIL 136 482 -38 <.5 ---
Castrol GTX 122 440 -15 .85 .12
Exxon High Performance 119 419 -13 .70 .11
Havoline Formula 3 125 465 -30 1.0 ---
Kendall GT-1 129 390 -25 1.0 .16
Pennzoil GT Perf. 120 460 -10 .9 ---
Quaker State Dlx. 155 430 -25 .9 ---
Red Line 150 503 -49 --- ---
Shell Truck Guard 130 450 -15 1.0 .15
Spectro Golden 4 174 440 -35 --- .15
Spectro Golden M.G. 174 440 -35 --- .13
Unocal 121 432 -11 .74 .12
Valvoline All Climate 125 430 -10 1.0 .11
Valvoline Turbo 140 440 -10 .99 .13
Valvoline Race 140 425 -10 1.2 .20
Valvoline Synthetic 146 465 -40 <1.5 .12
20W-40
Castrol Multi-Grade 110 440 -15 .85 .12
Quaker State 121 415 -15 .9 ---
15W-50
Chevron 204 415 -18 .96 .11
Mobil 1 170 470 -55 --- ---
Mystic JT8 144 420 -20 1.7 .15
Red Line 152 503 -49 --- ---
5W-50
Castrol Syntec 180 437 -45 1.2 .10 .095 % Phosphor
Quaker State Synquest 173 457 -76 --- ---
Pennzoil Performax 176 --- -69 --- ---
5W-40
Havoline 170 450 -40 1.4 ---
15W-40
AMSOIL 135 460 -38 <.5 ---
Castrol 134 415 -15 1.3 .14
Chevron Delo 400 136 421 -27 1.0 ---
Exxon XD3 --- 417 -11 .9 .14
Exxon XD3 Extra 135 399 -11 .95 .13
Kendall GT-1 135 410 -25 1.0 .16
Mystic JT8 142 440 -20 1.7 .15
Red Line 149 495 -40 --- ---
Shell Rotella w/XLA 146 410 -25 1.0 .13
Valvoline All Fleet 140 --- -10 1.0 .15
Valvoline Turbo 140 420 -10 .99 .13
10W-30
AMSOIL 142 480 -70 <.5 ---
Castrol GTX 140 415 -33 .85 .12
Chevron Supreme 150 401 -26 .96 .11
Exxon Superflo Hi Perf 135 392 -22 .70 .11
Exxon Superflo Supreme 133 400 -31 .85 .13
Havoline Formula 3 139 430 -30 1.0 ---
Kendall GT-1 139 390 -25 1.0 .16
Mobil 1 160 450 -65 --- ---
Pennzoil PLZ Turbo 140 410 -27 1.0 ---
Quaker State 156 410 -30 .9 ---
Red Line 139 475 -40 --- ---
Shell Fire and Ice 155 410 -35 .9 .12
Shell Super 2000 155 410 -35 1.0 .13
Shell Truck Guard 155 405 -35 1.0 .15
Spectro Golden M.G. 175 405 -40 --- ---
Unocal Super 153 428 -33 .92 .12
Valvoline All Climate 130 410 -26 1.0 .11
Valvoline Turbo 135 410 -26 .99 .13
Valvoline Race 130 410 -26 1.2 .20
Valvoline Synthetic 140 450 -40 <1.5 .12
5W-30
AMSOIL 168 480 -76 <.5 ---
Castrol GTX 156 400 -35 .80 .12
Chevron Supreme 202? 354 -46 .96 .11
Chevron Supreme Synt. 165 446 -72 1.1 .12
Exxon Superflow HP 148 392 -22 .70 .11
Havoline Formula 3 158 420 -40 1.0 ---
Mobil 1 165 445 -65 --- ---
Mystic JT8 161 390 -25 .95 .1
Quaker State 165 405 -35 .9 ---
Red Line 151 455 -49 --- ---
Shell Fire and Ice 167 405 -35 .9 .12
Unocal 151 414 -33 .81 .12
Valvoline All Climate 135 405 -40 1.0 .11
Valvoline Turbo 158 405 -40 .99 .13
Valvoline Synthetic 160 435 -40 <1.5 .12

[njsteve]

Looks like the Valvoline Race has the most Zinc at .20. Any info on Penzoil Race Oil?

[Belair62]

Thats all I have...thankfully I have Valvoline race in my fresh engine...roller cams don't have any problem on break in which is when the zinc becomes critical...its flat tappet that you really have to make sure you have plenty of manufacturer break in additive or they will be gone in minutes I hear...or just go with a roller. Long term I think we need to find an additive.

[Chevy454]

On BBC's w/flat tappets, it's *imperitive* to only break them in on the outer springs, or a set of actual break in springs...

[WILMASBOYL78]

[ QUOTE ]
On BBC's w/flat tappets, it's *imperitive* to only break them in on the outer springs, or a set of actual break in springs...

[/ QUOTE ]

I've heard of this before..is it really that "imperative" ??

wilma

[Belair62]

Good practice...few people do it...you roll the dice on full spring pressure.

[JRSully]

The guy who is breaking in my new, stock L78 motor said "YOU MUST" use only the outer spring for break in and insists on the 25w-50 Pennzoil race oil because it has a lot of zinc in it, he was up on this a long time ago, told me about the additives being left out of most oils these days except the race oils. He also went on to say that the factory break in GM product EOS, doesn't have the additives it used to. Just one man's opinion, but 30 years experience... SULLY

[Salvatore]

[ QUOTE ]
[ QUOTE ]
On BBC's w/flat tappets, it's *imperitive* to only break them in on the outer springs, or a set of actual break in springs...

[/ QUOTE ]

I've heard of this before..is it really that "imperative" ??

wilma

[/ QUOTE ]Absolutely!

[VintageMusclecar]

(yes, I'm posting this at 3:45 a.m. ain't insomnia a wonderful thing? )

For those of you who aren't familiar with this site...

Everything you ever wanted to know about oil but were afraid to ask

Rob is correct about BBC's (and just about any other engine for that matter) and break-in with flat tappet cams. It's a little more work to re-install the inner springs once break in is complete, but it beats the h*ll outta pulling the engine back down because of a wiped cam. You'd be suprised how much damage that material does to bearings, cranks, piston skirts and cylinder walls.

(Of course, if you have an extra $700+ burning a hole in your pocket, Schubeck lifters are an option. Just drop these in and go racing, no break-in needed.)

Oh, fwiw...

There's some worthwhile power to be had with synthetic oil. How much? Depends on the oil.

Food for thought: I personally know of one big block Chrysler bracket engine that was switched from 50-weight racing oil to a fairly thin name-brand synthetic.

After the engine had fully warmed up with the synthetic oil in it, the owner found the idle speed had increased by roughly 300 rpm.

"Things that make you go hmmmmm"

Eric

[tirebird]

I wrote to Mobil 1 about zinc/phosphorous levels in it's motor oil and received the following response.

"Mobil1 MX4T 10W40 and Mobil1 V-TWIN 20W50 motorcycle motor oils, Mobil1
15W50 Extended performance and Mobil1 5W40 diesel motor oils contains
the higher levels of zinc and phosphorous for your cams. The new energy
conserving motor oils do have reduced levels of zinc/phos however, they
typically do not have any adverse effects on cams unless you are
running
higher valve spring pressures. I would suggest you stick with the
product listed above if you are concerned about the phos/zinc issues."