shell rotella t.

[buckhorn76]

for all us flat tappet camshaft guys tsc store has 15w40 rotella t on this week. 5 lt jug for 18.99.

 

[Case75]

What's the zddp level in that Doug?

 

[buckhorn76]

the chart that i looked at greg claims 1200 - 1300 ppm zinc at dec. 2012.

 

[Case75]

Where did you find that info?

 

[buckhorn76]

there is a very informative website called bobs the oil guy.

 

[Case75]

What I've been reading is that the old CI-4 Rotella T was good but to stay away from the new CJ-4 Rotella T as it no longer has the correct level of ZDDP that we need. Same with SL and SM SPI ratings; don't use them.

 

[buckhorn76]

it is always wise to add delco e.o.s. no matter what you use.

 

[Case75]

I heard it had been discontinued for the same reasons...too much ZDDP.

 

[Keith Tedford]

EOS Availability

Lindsay Pontiac still had EOS last fall. last year, Americans were saying that it was discontinued when it was actually still available. I always used a bottle with every oil change in our L78 engine and had no problems. Lucky Who knows.

 

[Case75]

I found it on the AC Delco chemical catologue website. Looks like it's still available. http://acdelcochemicalcatalogue.com...age=1&search_frn=Lubricants&search=Lubricants

 

[buckhorn76]

i get mine at jack mcgee chev-olds in peterborough. i also use it as assembly lube and so do the dealership mechanics.

 

[Keith Tedford]

With my GM discount it is under $7 for me at Lindsay GMC Buick. For some strange reason, Americans are paying double that. Strange.

 

[buckhorn76]

yes keith it's odd that they pay more. i buy a case of 12 and the per bottle price comes down to $6.15 . a lot of folks forget that their marine engines need it too if they are flat lifter motors.

 

[buckhorn76]

a jug of rotella t with a bottle of e.o.s. will provide zddp content in the range of 1600 - 1800 ppm. this is what i use in my diesel tractor. because my car is never run in 32f conditions what i use in it is kohler magnum sae 30 small engine oil. the kohler oil is api rated at sj which is 1200 ppm zddp. along with the e.o.s. it also boosts to 1600 - 1800. the properties of this oil for automotive use are very good. think about the harsh conditions an air cooled small engine operates under. always under load at full rpm, splash as opposed to pressurized oiling, air cooling in high ambient temperature under full load. it is readily available to me but if that should ever change i will use rotella t. 1200 ppm of zddp is generally considered to be the minimum acceptable for flat tappet use and probably double that amount to break in a new cam.

 

[stpman]

What is the benifit of using Rotella if you have to add EOS?

 

[Riley P]

I am soooooooooo glad for this thread! My Chevelle wants to thank all you guys!!! I don't have plans on turning it into a full roller motor anytime soon so this will help keep it alive!

 

[buckhorn76]

What is the benifit of using Rotella if you have to add EOS?

because 1200 ppm is considered to be the minimum accepted amount the addition of e.o.s. will ensure that the oil will meet the required lube specs of the older oils.

 

[buckhorn76]

some more figures. a 12 oz bottle of e.o.s. dilutes in 5 lt of oil at 11-1. this translates into 620 ppm of zinc and 565 ppm phosphorus. so oil that has a zinc content of 1200 ppm is now 1820 ppm. because delco e.o.s. is an assembly lube you are also adding a small amount of molybdenum to your engine oil which is also quite beneficial to bearings and wrist pins.

 

[stpman]

Thanks, I'll have to get some EOS for when I start my 73 again. next decision is whether or not to build the Tuned Port I have from an 87 IROC and run it in the 73

 

[buckhorn76]

you will make more horsepower with a carburetor !!! and you will need an electric fuel pump.