A friend in the old car hobby was suggesting that the newest oils with SH and/ or newer designations don't contain enough phosphorous and zinc for proper lubrication compared to the older oils. One example given was burn out of the bronze idler gear in a 30's Cadillac after 1000 miles.
One recommendation was to add STP 4 cylinder top oil (in the red bottle) to each oil change because it has more Zn and Ph in it and was an inexpensive way to achieve that.. Has anyone heard about this, if it is a worthwhile concern and if there are any oils or (other) additives we should consider?
Lew, I use relatively cheap oldtimer oils. Only disadvantage is, that You can?t buy them at Your filling station and havemaybe to buy Yout Seasons quantity.
Be sure to check oils and lubricants for additives which may hurt bronze, copper and other nonferrous metals found in Your gear box and above all in the differential. Modern Engine oils may have additives keeping dirt in circulation, thus stringently needing a full stream oil filter. Also, a newly rebuilt , clean engine may need another oil less additives than a dirty one.
Castrol has good choice of Oldtimer oils since shortly.
Millers Oils is a fine choice: Be sure to check their site http://www.millersoils.net These oils in part are even less expensive than modern ones, but You must carry a supply with You, as You don?t get them at common Gas Stations or super markets.
last year we had several articles in oldie magazines saying that a lot of old engines and transmissions are killed by modern and unsuited oils.
Greetings! Go
thanks Go for the reply. Will check out Millers. As for the tranny, steering gear and non- hypoid rear end, the '36 parts book calls for SAE 160 oil. The Standard Oil(Chevron) distributor in our area suggested for older cars their RPM 140 wt.gear lubricant which is a little more viscous than 90 wt. and not too full of additives. I've used it for awile, and it seems to work well in our mild climate (no temp's below 40F).
I've been usint Shell Rotella. It has enough zinc.
Two months ago, Valvoline released a full synthetic with added zinc. I have changed over to that in every car and truck I own.
57plymouth... Where do you buy your synthetic..? I get my Rotella at Wal-Mart, but haven't seen any Valvoline Synthetic.
Disadvantaged Auto Parts, (Advance Auto Parts)
No-Parts Zone (Auto Zone)
CRAPA (NAPA)
O'Ripoffs (O'Reilly's)
All of the above carry it.
I only buy groceries from China-Mart. I didn't even know they had auto parts.
Quote from: 57plymouth on February 10, 2009, 06:22:02 PM
Disadvantaged Auto Parts, (Advance Auto Parts)
No-Parts Zone (Auto Zone)
CRAPA (NAPA)
O'Ripoffs? (O'Reilly's)
All of the above carry it.
I only buy groceries from China-Mart.? I didn't even know they had auto parts.
;D
Cliff54