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Ask Mobil Archive -
ZDDP
DateQuestionAnswer
04/26/2012
ZDDP Levels for Mobil™ Conventional Motor Oils
Hi. I have used Mobil 1™ products only in my cars for a decade. I have recently acquired a 1928 Ford Model A that only requires non-synthetic oil with 500-mile change intervals, but the engine also re...
All of our high-Zinc products are advanced full synthetic oils. As for the Zinc/Phosphorus content in Mobil Super High Mileage, we formulate this oil to meet the maximum Phosphorus content allowable t...
01/05/2012
ZDDP Levels of Mobil Delvac
What are the current ZDDP levels for Mobil Delvac 15W-40? Is it recommended for classic engines with flat tappet camshafts?
Mobil Delvac 1300 Super 15W-40, which meets API CJ-4 performance standards, has a Phosphorus limit of 0.12 wt%.  With respect to your question on slider tappets, Mobil Delvac 1300 Super 15W-40 meets C...
01/20/2010
Break-in Motor Oil for Small Block Chevy Engine
I am looking for a break-in-oil for my small block Chevy. I have been looking at Royal Purple's break-in-oil and would like to find something less costly and that have most of the quality needed to br...
We recommend you refer to our chart that shows the various levels of antiwear (zddp) in each of our Mobil 1 products.  You’ll see there are various viscosity grades of Mobil 1 with higher levels of an...
01/12/2010
Will Switching to a Motor Oil with More Phosphorous Adversely Impact a Ford Explorer?
I've been running Mobil 1 10W-30 in my Ford Explorer V6 SOHC for years now. Thought I would switch to Mobil 1 0W-40 for a variety of reasons. Is this oil OK with an OHC engine and will the change from...
Mobil 1 0W-40 is an outstanding product, and with the 40 grade high temperature viscosity it can help control oil consumption in higher mileage vehicles. As far as the higher phosphorus content and it...
10/06/2009
Correct Motor Oil Viscosity for Cars with Hydraulic Lifters
Will your Mobil 1 15W-50 give my '67 Corvette and my '62 Skylark with a recent rebuilt engine the proper lubrication for the hydraulic lifters sliding on the cam?
The short answer is yes. Mobil 1 5W-50 has a higher level of phosphorus (zinc) preferred for older sliding valve trains in higher performance vehicles.
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