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The Oil Level Gauge, commonly called a Dipstick, differs between early and late A12 engines.
Contents |
Overview
Short: ~9-1/16 inches from tip to bottom of rubber
Long: ~14-3/4 inches from tip to bottom of rubber
If you rotate the A12 dipstick 180 degrees and put it back in, it hits the crank. Makes a crazy slapping, tapping, whacking noise.
Early type goes directly into block (1970-1973) so uses a short stick
H10 version is used by front-distributor A12 engine
Late type goes into a tube which is inserted into block (late 1973-up)
H50/H72/H95-type gauge is also used by B210 and B310 A12/A14/A15/A12A engines
Dipstick only goes in one way. Position it in so that the flat of the stick is parallel with the block so that it slides into the tube bend.
Oil Capacity
with oil filter change 3.2 Litres (2-7/8 qt) w/o oil filter change 2.7 Litres (2-3/8 qt)
The exact amount depends on which oil filter you use. Filters range from more than 1 litre to less than 1/2 litre.
When changing oil and filter, add 3 liters, then check the dipstick to see how much more is needed. From the L line to the H line is 1 liter.
Using the early right-side oil pan gasket on the late A-engine will result in the dipstick being wiped clean on removal, this will then make it appear as though the engine is low on oil.
Updated Gauge
ENGINE OIL LEVEL GAUGE
Bulletin Number: TS72-18
Date: March 28, 1972
Classification Number: EN72-001
Section: Engine
Models: All
Production Change: The engine oil level gauge (dipstick) has been standardized for all models, with the level indication as well as the letters embossed on the rod
Beginning Engine Serial Number
A12-061093
L16-016014
L24-060520
Parts Information
New 11140-H1003
Former 11140-H1002
Engine Model: A12
Basic Vehicle Model: LB110 series
Interchangeability Yes
Part Numbers
Tube
A tube is used by 1974-up engines (see A Engine Redesign).
Buy at Bprojects
15146 ASSY-GUIDE [Dipstick tube] see part numbers below
SPECIFICATIONS Insert point diameter: 9.1mm. Main pipe diameter: 10mm. Gauge point inner diameter: 10.2mm. Gauge pointouter diameter: 12.2mm. Gauge Insert length: 25mm. Bending degree: 12.5 degrees
12.5 degree bend
1200
B110 USA + JPN 11140-H1002 GAUGE-OIL LEVEL A12 11140-H1003 GAUGE-OIL LEVEL A12 <> 11140-H1002 * USA: 0271-
B120 JPN 11140-H5001 GAUGE-OIL LEVEL -8808 NOK <> 11140-H5002 11140-H5002 GAUGE-OIL LEVEL 8808-8910 オオイセイサク 11140-H5010 GAUGE-OIL LEVEL 8808-8910 NOK 11140-G5101 GAUGE-OIL LEVEL 8910- 15146-H5001 GUIDE TUBE -8109 <> 15146-H5002 15146-H5002 GUIDE TUBE 8110-8910 15146-G2600 GUIDE TUBE 8910-8912 15146-G2501 GUIDE TUBE 8912-
RWD
B10 JPN 11140-18002 GAUGE-oil level <> 15140-18001
B210 USA + JPN 11140-H5001 GAUGE-OIL LEVEL * USA -0275 * dipstick L-H lines 1.3 liter 11140-H7200 GAUGE-OIL LEVEL 0375- USA 4/5 11140-H5001 * dipstick L-H lines 1.0 liter. See A-series_Engine_Changes#1976 15146-H5001 GUIDE TUBE B310 JPN 11140-H5001 GAUGE-OIL LEVEL [all engines, all years] 11140-H5010 GAUGE-OIL LEVEL -8010 [2nd source] 15146-H5001 GUIDE TUBE [all years] 15146-H5002 GUIDE TUBE 7910- B310 USA 11140-H5001 GAUGE ASSY-OIL LEVEL (NOK) A12A 11140-H5010 GAUGE ASSY-OIL LEVEL (OOI) A12A 11140-H9500 GAUGE ASSY-OIL LEVEL (NOK) A12A <> 11140-H5001 15146-H5001 GUIDE TUBE 15146-H5002 GUIDE TUBE -0780 <> 15146-H5001 15146-H9801 GUIDE TUBE 0880- <> 15146-H5002
B10 Datsun 1000
FWD
FWD A-series engines use a totally different dipstick.
F10 USA 11140-M3001 ASSY-GAUGE,OIL LEVEL -1076 11140-M4965 ASSY-GAUGE,OIL LEVEL 1076- Y 11140-M3001 11145-M3001 ASSY-GUIDE,OIL LEVEL -1076 11145-M4966 ASSY-GUIDE,OIL LEVEL 1076- Y 11145-M3001 11146-M3000 ASSY-SUPPORT,OIL LEV
N10 USA 11140-W6660 GAUGE-OIL LEVEL A15S 11140-W7000 GAUGE-OIL LEVEL A14S 11140-W7001 GAUGE-OIL LEVEL A14S <> 11140-W7000 15146-W7001 GUIDE-OIL LEVEL GAUGE A14S 15146-W6660 GUIDE-OIL LEVEL GAUGE A15S 15146-W6661 GUIDE-OIL LEVEL GAUGE A15S
Oil Level
Oil should be between H and L marks.
Marks are the same for early (H10) vs late (H50) gauges, even though the overal gauge length differs. That's because they use the same oil pan! The oil level from the bottom of the pan is what is important.
Tube Removal
Use vice-grips and tap it up and out while twisting back and forth. Put a bolt in the end before gripping it to prevent tube collapse.