Oil Change - Page 3

RB60 · #41 (**permalink**) 12-03-2019, 09:13 AM

Thanks guys, I was a bit concerned. Even in summer, I usually let come up to operating temp before driving it (it doesn't like to run too well below that). I'll keep a check on the oil temp gauge too. The dealership is only about 4 miles away, so I should be good. Thanks again

Azhinoon · #42 (**permalink**) 04-04-2020, 07:33 AM

I have been using Delo LE 15/40 for 4 years. Engine built by dirt track racer. This what he recommended. 15k on engine no problems what so ever.

MKS427 · #43 (**permalink**) 04-04-2020, 08:15 AM

Craft recommended/required for warranty Joe Gibbs Hot Rod oil 10w30. The explanation for high zinc, in a roller motor, high spring pressures essentially squeeze the oil out while the motor is off. Zinc clings to the parts, preventing a "dry" start. That's what I was told, anyway. A lot of the guys also use Valvoline high zinc, I believe it is called VR1, not 100% sure.

Moriarty · #44 (**permalink**) 04-04-2020, 11:20 AM

I've been using VR1 for the zinc content. If it is only for preventing a dry start, I'm wondering if it is overkill since I have an accusump for preoiling. I was always told it was to prevent cam wear with flat tappets (which I assume meant during normal operation).

ront49 · #45 (**permalink**) 04-05-2020, 07:04 AM

I switched from Mobil 1 to Valvoline Racing 20-50 with the added zink. With Mobil 1 the oil pressure ran about 30lbs. at an idle and 50-60 at 3500rpm and above. With Valvoline pressure remains approximately 55-60 lbs. at idle and 60-70 at 3500rpm and above. I really have no idea if that is all that beneficial but I think the Mobil 1 is just too thin for a high performance stroker. I still run the Mobil in my Corvette as recommended and also in my Tacoma. The pressure dosen't seem to vary near as much in those as it does in the Cobra.

bobcowan · #46 (**permalink**) 04-05-2020, 08:31 AM

I don't know of any pro engine builder that recommends a high pressure pump for a Windsor engine. Some will recommend/use a high volume pump, but not high pressure. There's just no need for it.

It takes energy to run a pump that hard to make that kind of pressure. Especially when cold. Lots of examples of people breaking drive rods and shearing distributor gears.

You can add additional ZDDP to any oil. https://www.summitracing.com/parts/cca-159