Most conventional oil seals are designed only to withstand very low-pressure applications (about 8 psi or less). If additional internal pressure is present or anticipated, pressure relief is necessary.
One of the key advantages of NGK MGB Spark Plugs is their ability to withstand extreme temperatures and pressures within the engine. Their robust construction ensures a long service life, reducing the need for frequent replacements and contributing to overall engine health Their robust construction ensures a long service life, reducing the need for frequent replacements and contributing to overall engine health