In June of 1964, plaintiff’s decedent, Hattie Howell, died from injuries received in an automobile acciident. The defendant’s truck struck the car in which she was riding, killing her and injuring her daughter, Anna Sue Collins.
The decedent’s husband, as administrator of her estate and as guardian of their minor son, instituted a wrongful death action in the Oakland county circuit court. However, pending determination of this suit, plaintiff’s daughter, a Tennessee resident, obtained a judgment against the defendant for her personal injuries in the United States District Court.
After that judgment, the plaintiff here moved in the circuit court for a partial summary judgment. He argued that the issue of defendant’s negligence had been determined in the federal court and con*143tended that the issue of damages was all that remained for determination.
The trial judge granted the motion so far as it related to the daughter, Anna Sue Collins, hut denied the motion as to the remaining interests.
On appeal and cross-appeal each party asserts the court erred in ruling against his position.
In the federal judgment the defendant was found to he negligent on the same facts and issues presented in this case. The administrator now claims that the federal court finding of defendant’s negligence should estop the defendant from denying it here. The defendant contends that it should not he estopped from retrying the issue of negligence. Defendant argues that the parties are not identical nor in privity with each other and, traditionally, without this identity or privity there is no mutuality and therefore no estoppel.
Anna Sue Collins, as one of the heirs of her mother, may he one of the real parties in interest in this suit by the administrator of her mother’s estate. The conclusive effect of a judgment is on the real party in interest and not on the nominal parties of record. It was held in Gumienny v. Hess (1938), 285 Mich 411, that a judgment against the real party in interest will not bar one who was a nominal party in the suit (next friend) from later pursuing an action for his own personal losses.
However, there is another consideration which the trial judge might have found to he of equal or greater weight. Since the quantum and quality of offense and defense frequently depend upon the nature and seriousness of the injury, the adjudication in the earlier matter involving Anna Sue Collins should not necessarily he a bar to litigation of the administrator’s claim for wrongful death against the same defendant. [The administrator is tech-*144ideally a different plaintiff (Jordan v. C. A. Roberts Company [1967], 379 Mich 235, affirming 2 Mich App 113), and while Anna Sue Collins is probably pecuniarily interested, this issue is a matter generally reserved for certification to probate court after judgment (MCLA § 600.2922 [Stat Ann 1962, § 27 A-.2922]). She may not have a pecuniary interest in the final result.]
Either of these possible considerations may be found to be peculiarly controlling as to the interests of Anna Sue Collins.
In any event, the issue before the trial judge should be whether the defendant, Vito’s Trucking and Excavating Company, should be collaterally es-topped as to all the plaintiffs. If, in the ease at bar, collateral estoppel should apply to one interest it should apply to all. At issue is the defendant’s negligence. It cannot be said in one instance that he fairly and justly litigated the issue of his negligence, and in the other instance that he did not. The application of collateral estoppel should be a rule of discretion to be decided on equitable principles. It should apply alike to all who are represented by the statutory plaintiff.
The ruling with reference to Anna Sue Collins should be reconsidered and determined consistently as to all the parties in this litigation.
In deciding the issue raised on appeal, we must discuss the concept of mutuality in application of collateral estoppel.
In recent years many states have either dispensed with mutuality or, in substance, modified it.1 However, few jurisdictions have allowed subsequent plaintiffs to assert collateral estoppel as an offensive weapon against the same defendant. The leading *145case of Bernhard v. Bank of America National Trust & Savings Association (1942), 19 Cal 2d 807 (122 P2d 892), might he read to hold that the same defendant is estopped from relitigating the issue of his liability. The Bernhard tests are:
“Was the issue decided in the prior adjudication identical with the one presented in the action in question ? Was there a final judgment on the merits ? Was the party against whom the plea is asserted a party to the prior adjudication?” (Emphasis Supplied.)
The broad holding by the California Supreme Court was an attempt to excise from collateral estoppel the ritualistic label of “mutuality”. But it should not be read to eliminate the principles of justice and equity inherent in determining whether collateral estoppel should bar a party from relitigating the issues of his liability.
Michigan courts have not decided a case factually similar to the case before us. They have, however, dealt with the problem of mutuality of remedy and its role in the application of collateral estoppel.2
The Supreme Court has commented on mutuality and held that it was not to be the controlling factor in collateral estoppel. In so holding, the Court said in DePolo v. Grieg (1954), 338 Mich 703:
“Aside from the principles of mutuality, plaintiffs have asserted no reasons why collateral estoppel should not be applied as barring this action against the present defendant.”
In reducing the effect of mutuality the Court did not define in DePolo what principles would control collateral estoppel. However, long before DePolo, *146the Court emphasized through Justice Cooley that “estoppel does not depend upon technicalities, but rests in broad principles of justice * * * ”.3
It cannot be said that every case in which the result was formerly justified on the grounds of “lack of mutuality” must now be decided differently, even though it can be brought within the general language of the Bernhard doctrine.4
Collateral estoppel is essentially a procedural tool designed to conserve judicial resources and to insure consistent decisions on the same issues and facts. But its use is not to be indiscriminate. There are some instances when the foregoing considerations must yield to the demands of justice to particular litigants.5
In some cases it would seem unjust to estop a defendant from relitigating his liability to several plaintiffs. For example, if a defendant wearied of winning six law suits seriatim determining his negligence in a particular incident and failed to defend a seventh suit, to allow, say the remaining ten plaintiffs to preclude his defense in later suits on the theory of estoppel would seem inequitable, whatever the considerations of judicial resources or consistent results. Yet there are instances when it is equally unfair to require multitudinous plaintiffs to try the issue separately. See United States v. United States Airlines, Inc. (ED Wash, 1962), 216 F Supp 709.
*147In onr view the application of estoppel is best left to the discretion of the trial judge who, guided by “broad principles of justice,” would weigh the interests of the litigants and the efficient administration of justice.
The opinion of the trial judge in this case indicates that he considered himself precluded from holding the defendant estopped to dispute the claim of the interests other than Anna Sue Collins. We hold that he was free to do so or not as, in his discretion, the ends of justice require.
Remanded for reconsideration in light of this opinion.
No costs.
' ' Miller, J. concurred.See eases cited in United States v. United States Airlines, Inc., (ED Wash, 1902), 216 F Supp 709, 726.
Sophins v. Avery (1891), 87 Mich 551; Krolick v. Curry (1907), 148 Mich 214; DePolo v. Grieg (1954), 338 Mich 703; Jones v. Chambers (1958), 353 Mich 674.
Fifield v. Edwards (1878), 39 Mich 264.
See generally Currie, Mutuality of Collateral Estoppel: Limits of the Bernhard Doctrine, 9 Stan L Rev 281 (1957).
The wry observation of Jeremy Bentham might well be kept in mind in applying estoppel or not:
“One is tempted however to ask, whether justice be a thing worth having or not? And if it be, at what time is it desirable that litigation should be at an end? After justice is done, or before?” Bentham, The Rationale of Judicial Evidence, in 7 Works of Jeremy Bentham 172 (Bowring ed 1843). Cited in footnote No 17, 9 Stan L Rev 281, 288 (1957).