Oil Pan Installation Note

WARNING: This page is about a different car, the 2020 Mazda CX-30. However, it is still accessible from the selected car via links, so may be relevant.

When replacing the oil pan, install the short-cord and a new engine oil level sensor. (See ENGINE OIL LEVEL SENSOR REMOVAL/INSTALLATION .)
Completely clean and remove any oil, dirt, sealant or other foreign matter that may be adhering to the cylinder block and oil pan.
CAUTION:
- Using bolts with the old silicone sealant adhering could cause cracks in the cylinder block.
Courtesy of MAZDA MOTORS CORP.
When reusing the oil pan installation bolts, clean any old sealant from the bolts.
CAUTION:
- Apply silicone sealant in a single, unbroken line to prevent oil leakage.
- To prevent silicone sealant from hardening, adhere the oil pan to the cylinder block within 10 min after silicone sealant is applied. Tighten the installation bolts completely soon after adhering.
Apply silicone sealant (TB1217D or equivalent) to the oil pan along the inside of the bolt holes as shown in the illustration.
SKYACTIV-G 2.0

Courtesy of MAZDA MOTORS CORP.
CAUTION:
- For SKYACTIV-G 2.5, also apply silicone sealant to the cylinder block.
SKYACTIV-G 2.5 oil pan

Courtesy of MAZDA MOTORS CORP.

SKYACTIV-G 2.5 cylinder block

Courtesy of MAZDA MOTORS CORP.

Thickness

SKYACTIV-G 2.0: 2.0-6.0 mm {0.08-0.23 in}

SKYACTIV-G 2.5: 3.0-7.0 mm {0.12-0.27 in}

Install the oil pan using the following procedure:

CAUTION:

Remove any silicone sealant which oozes out into an oil pan installation bolt hole. If silicone sealant penetrates an oil pan installation bolt hole, the cylinder block could become damaged.

Courtesy of MAZDA MOTORS CORP.

SKYACTIV-G 2.0

Install the oil pan to the cylinder block.
Tighten the bolts in the order shown in the illustration.

Fig 1: Oil Pan Bolts Tightening Sequence (SKYACTIV-G 2.0)
Courtesy of MAZDA MOTORS CORP.

SKYACTIV-G 2.5

Install the oil pan to the cylinder block.

Temporarily tighten the two bolts shown in the illustration.

Courtesy of MAZDA MOTORS CORP.

Tighten the bolts in the order shown in the illustration.

Fig 2: Oil Pan Bolts Tightening Sequence (SKYACTIV-G 2.5)
Courtesy of MAZDA MOTORS CORP.