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My '68 has a 327/300 that looks fresh rebuilt and runs strong. My engine don't burn oil and has a proper oil pressure. Transmission is a 4-speed.
I own the car since may, and I have not changed the engine oil yet because it looked quite new. I've driven for about 1200 miles since and I'm assuming the oil is still in good conditions, but I don't know what kind of oil they put in when the car was in US.
I need also to change the gearbox oil (4-speed), so I'm planning to do both jobs in time for the next season, just to be sure of what is running in my Vette.
I've read lot of thread here regarding this and I know that's a long-debated argument, but I'm still a bit confused because there's many and many divergent opinions and I want to be sure to not make mistakes.
After some search now I'm oriented on those two products:
Gearbox: Castrol Manual EP 80W-90 API GL4 - ZF TE-ML 02A, 16A, 17A Engine: Valvoline (VV205-6PK) VR1 SAE 10W-30 Racing Motor Oil
Could it be a right choice? My main use is for touring/vacation and fun, not race. Many thanks as usual!
EDIT: please excuse me for the "choice" typo in the Thread Title :/
Last edited by Proton_ita; Dec 26, 2016 at 01:33 PM.
My '68 has a 327/300 that looks fresh rebuilt and runs strong. My engine don't burn oil and has a proper oil pressure. Transmission is a 4-speed.
I own the car since may, and I have not changed the engine oil yet because it looked quite new. I've driven for about 1200 miles since and I'm assuming the oil is still in good conditions, but I don't know what kind of oil they put in when the car was in US.
I need also to change the gearbox oil (4-speed), so I'm planning to do both jobs in time for the next season, just to be sure of what is running in my Vette.
I've read lot of thread here regarding this and I know that's a long-debated argument, but I'm still a bit confused because there's many and many divergent opinions and I want to be sure to not make mistakes.
After some search now I'm oriented on those two products:
Gearbox: Castrol Manual EP 80W-90 API GL4 - ZF TE-ML 02A, 16A, 17A Engine: Valvoline (VV205-6PK) VR1 SAE 10W-30 Racing Motor Oil
Could it be a right choice? My main use is for touring/vacation and fun, not race. Many thanks as usual!
EDIT: please excuse me for the "choice" typo in the Thread Title :/
Racing oil is designed . . . for racing. It doesn't have the additives for long term use.
In Kalifornia, Racing Oil is another term for EPA exempt. It works just fine.
I doubt that Redline or Royal Purple is any different. Just kinda overpriced for a road car, IMHO.
Assuming the mtr still has a flat tappet cam, would have a look at the sticky in the performance forum for what oil to use with flat tappet engines. Recommend using 10-30 weight. The '68 owner's manual recommended oil change "every 4 months, except that if more than 6000 miles are driven in a 4 month period, change oil every 6000 miles". Interesting the owner's manual specified oil filter replacement at every other oil change.
Now days, oil/filter changes are normally done once a year. In this part of the country, where hobby cars are put away for the winter, oil changes are done at the end of the season, so that there is fresh oil in the sump during the lay-up time.
while you're doing your oil,change the rear end gear oil and don't forget to put in the G.M. additive for the rear,very important. Mike
I've already changed it last summer with Castrol Limited Slip, it works very well and also stopped an annoying seal leak
Originally Posted by FKING1
My 2P's, Pennzoil Synchromesh for trans and Mobil 1 - 5w30 for motor.
Use both in my 70.
Maybe I'm wrong or here in Europe Mobil sells other kind of oil under the same brand, but the only 5-30 we've got is the ESP Formula that it's claimed for newer gasoline and diesel engines
Originally Posted by Big2Bird
I use the Valvoline 10-30 Race oil, and love it.
Tranny. I don't worry about it that much. Just a name brand.
Originally Posted by juanvaldez
Racing oil is designed . . . for racing. It doesn't have the additives for long term use.
I believe that the "Racing" designation is merely marketing in this case, for track only oil they use "not street legal" designation.
Assuming the mtr still has a flat tappet cam, would have a look at the sticky in the performance forum for what oil to use with flat tappet engines. Recommend using 10-30 weight. The '68 owner's manual recommended oil change "every 4 months, except that if more than 6000 miles are driven in a 4 month period, change oil every 6000 miles". Interesting the owner's manual specified oil filter replacement at every other oil change.
Now days, oil/filter changes are normally done once a year. In this part of the country, where hobby cars are put away for the winter, oil changes are done at the end of the season, so that there is fresh oil in the sump during the lay-up time.
It's precisely because I've read the sticky thread that I'm so confused
About the change period, I'm also oriented to a oil and filter change once a year
Last edited by Proton_ita; Dec 27, 2016 at 03:26 AM.
Just another question: can I use a 5w-50 or a 10w-60 instead of a 10w-30 (same ZDDP and other factors)?
I'm skeptical to be honest, but in my country these kinds of oil are far more common and cheap than the US-common 10w-30 (I just paste the Valvoline line but it's the same for other vendors):
It's precisely because I've read the sticky thread that I'm so confused :[/QUOTE]
Did not know that you read the sticky, so was not sure if you were aware of the ZDDP packages being greatly reduced when API came out with SM rated oil. The scuff package was reduced even more when SN came out. Maybe oil formulated in Europe is not governed by API, (American Pertrolem Institute) and you don't have to worry about lack of zinc and phosphorous. When you buy oil at the local parts store, does the bottle lable have any API ratings?
asking what oil to use is like asking whats your favorite food.. everyone likes something else. you motor should use a 10W30 ..conventional or synthetic is your choice.. The synthetic will extend the life of the motor but costs more but has 2-3 times the change interval length.. you can use an oil with zinc additive but since you have already broken in the cam , its not that critical anymore ..I like 10W30 Mobil One Extended Performance and change it every 15,000 miles as recommended...
If your car sits for long periods of time esp in cold climates do the rear
I built a new rearend yrs ago sat in my garage (good weather out here too) for a few yrs. Before I put it back in the car I cracked the rear cover off as I couldnt remember if I filled it or not
Looked like milk, even pitted the new pinion bearings
Sitting kills cars